400959677 has 2 divisors, whose sum is σ = 400959678. Its totient is φ = 400959676.

The previous prime is 400959617. The next prime is 400959703. The reversal of 400959677 is 776959004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 246678436 + 154281241 = 15706^2 + 12421^2 .

It is a cyclic number.

It is not a de Polignac number, because 400959677 - 2⁶ = 400959613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400959607) 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 as a sum of consecutive naturals, namely, 200479838 + 200479839.

It is an arithmetic number, because the mean of its divisors is an integer number (200479839).

Almost surely, 2^400959677 is an apocalyptic number.

It is an amenable number.

400959677 is a deficient number, since it is larger than the sum of its proper divisors (1).

400959677 is an equidigital number, since it uses as much as digits as its factorization.

400959677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 476280, while the sum is 47.

The square root of 400959677 is about 20023.9775519251. The cubic root of 400959677 is about 737.3950758325.

The spelling of 400959677 in words is "four hundred million, nine hundred fifty-nine thousand, six hundred seventy-seven".