149139930 has 96 divisors (see below), whose sum is σ = 387120384. Its totient is φ = 36749952.

The previous prime is 149139899. The next prime is 149139931. The reversal of 149139930 is 39931941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149139931) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 508864 + ... + 509156.

It is an arithmetic number, because the mean of its divisors is an integer number (4032504).

Almost surely, 2^149139930 is an apocalyptic number.

149139930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 149139930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193560192).

149139930 is an abundant number, since it is smaller than the sum of its proper divisors (237980454).

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

149139930 is a wasteful number, since it uses less digits than its factorization.

149139930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388 (or 369 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 39.

The square root of 149139930 is about 12212.2860267847. The cubic root of 149139930 is about 530.3118255201.

The spelling of 149139930 in words is "one hundred forty-nine million, one hundred thirty-nine thousand, nine hundred thirty".