156929441 has 2 divisors, whose sum is σ = 156929442. Its totient is φ = 156929440.

The previous prime is 156929429. The next prime is 156929447. The reversal of 156929441 is 144929651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137569441 + 19360000 = 11729^2 + 4400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-156929441 is a prime.

It is not a weakly prime, because it can be changed into another prime (156929447) by changing a digit.

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 as a sum of consecutive naturals, namely, 78464720 + 78464721.

It is an arithmetic number, because the mean of its divisors is an integer number (78464721).

Almost surely, 2^156929441 is an apocalyptic number.

It is an amenable number.

156929441 is a deficient number, since it is larger than the sum of its proper divisors (1).

156929441 is an equidigital number, since it uses as much as digits as its factorization.

156929441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 41.

The square root of 156929441 is about 12527.1481590983. The cubic root of 156929441 is about 539.3882429691.

The spelling of 156929441 in words is "one hundred fifty-six million, nine hundred twenty-nine thousand, four hundred forty-one".