149640939 has 60 divisors (see below), whose sum is σ = 263522512. Its totient is φ = 82892160.

The previous prime is 149640917. The next prime is 149640961. The reversal of 149640939 is 939046941.

It is an interprime number because it is at equal distance from previous prime (149640917) and next prime (149640961).

It is not a de Polignac number, because 149640939 - 2⁷ = 149640811 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 149640894 and 149640903.

It is not an unprimeable number, because it can be changed into a prime (149640539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 953049 + ... + 953205.

Almost surely, 2^149640939 is an apocalyptic number.

149640939 is a deficient number, since it is larger than the sum of its proper divisors (113881573).

149640939 is an equidigital number, since it uses as much as digits as its factorization.

149640939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 149640939 is about 12232.7813272371. The cubic root of 149640939 is about 530.9049911410.

The spelling of 149640939 in words is "one hundred forty-nine million, six hundred forty thousand, nine hundred thirty-nine".