149868940 has 96 divisors (see below), whose sum is σ = 368069184. Its totient is φ = 50749440.

The previous prime is 149868931. The next prime is 149868949. The reversal of 149868940 is 49868941.

149868940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (149868931) and next prime (149868949).

It is not an unprimeable number, because it can be changed into a prime (149868949) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 180807 + ... + 181633.

It is an arithmetic number, because the mean of its divisors is an integer number (3834054).

Almost surely, 2^149868940 is an apocalyptic number.

149868940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149868940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184034592).

149868940 is an abundant number, since it is smaller than the sum of its proper divisors (218200244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149868940 is a wasteful number, since it uses less digits than its factorization.

149868940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907 (or 905 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 49.

The square root of 149868940 is about 12242.0970425822. The cubic root of 149868940 is about 531.1744927980.

Subtracting from 149868940 its reverse (49868941), we obtain a palindrome (99999999).

The spelling of 149868940 in words is "one hundred forty-nine million, eight hundred sixty-eight thousand, nine hundred forty".