156393949 has 8 divisors (see below), whose sum is σ = 157393080. Its totient is φ = 155398656.

The previous prime is 156393889. The next prime is 156393961. The reversal of 156393949 is 949393651.

156393949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3080025 + 153313924 = 1755^2 + 12382^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 156393949 - 2⁷ = 156393821 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 (156393649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130497 + ... + 131689.

It is an arithmetic number, because the mean of its divisors is an integer number (19674135).

Almost surely, 2^156393949 is an apocalyptic number.

It is an amenable number.

156393949 is a deficient number, since it is larger than the sum of its proper divisors (999131).

156393949 is a wasteful number, since it uses less digits than its factorization.

156393949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1919.

The product of its digits is 787320, while the sum is 49.

The square root of 156393949 is about 12505.7566344464. The cubic root of 156393949 is about 538.7740237240.

The spelling of 156393949 in words is "one hundred fifty-six million, three hundred ninety-three thousand, nine hundred forty-nine".