149159957 has 4 divisors (see below), whose sum is σ = 149206176. Its totient is φ = 149113740.

The previous prime is 149159953. The next prime is 149159971. The reversal of 149159957 is 759951941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 759951941 = 7 ⋅108564563.

It is a cyclic number.

It is not a de Polignac number, because 149159957 - 2² = 149159953 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149159953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17873 + ... + 24854.

It is an arithmetic number, because the mean of its divisors is an integer number (37301544).

Almost surely, 2^149159957 is an apocalyptic number.

It is an amenable number.

149159957 is a deficient number, since it is larger than the sum of its proper divisors (46219).

149159957 is an equidigital number, since it uses as much as digits as its factorization.

149159957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46218.

The product of its digits is 510300, while the sum is 50.

The square root of 149159957 is about 12213.1059522138. The cubic root of 149159957 is about 530.3355617960.

The spelling of 149159957 in words is "one hundred forty-nine million, one hundred fifty-nine thousand, nine hundred fifty-seven".