400602157 has 2 divisors, whose sum is σ = 400602158. Its totient is φ = 400602156.

The previous prime is 400602149. The next prime is 400602203. The reversal of 400602157 is 751206004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 323496196 + 77105961 = 17986^2 + 8781^2 .

It is a cyclic number.

It is not a de Polignac number, because 400602157 - 2³ = 400602149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400602857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200301078 + 200301079.

It is an arithmetic number, because the mean of its divisors is an integer number (200301079).

Almost surely, 2^400602157 is an apocalyptic number.

It is an amenable number.

400602157 is a deficient number, since it is larger than the sum of its proper divisors (1).

400602157 is an equidigital number, since it uses as much as digits as its factorization.

400602157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 400602157 is about 20015.0482637440. The cubic root of 400602157 is about 737.1758419139.

The spelling of 400602157 in words is "four hundred million, six hundred two thousand, one hundred fifty-seven".