149643940 has 24 divisors (see below), whose sum is σ = 314500032. Its totient is φ = 59810400.

The previous prime is 149643929. The next prime is 149643953. The reversal of 149643940 is 49346941.

It is a junction number, because it is equal to n+sod(n) for n = 149643893 and 149643902.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34915 + ... + 38965.

It is an arithmetic number, because the mean of its divisors is an integer number (13104168).

Almost surely, 2^149643940 is an apocalyptic number.

149643940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149643940 is an abundant number, since it is smaller than the sum of its proper divisors (164856092).

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

149643940 is a wasteful number, since it uses less digits than its factorization.

149643940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5907 (or 5905 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 149643940 is about 12232.9039888327. The cubic root of 149643940 is about 530.9085401592.

The spelling of 149643940 in words is "one hundred forty-nine million, six hundred forty-three thousand, nine hundred forty".