400964677 has 2 divisors, whose sum is σ = 400964678. Its totient is φ = 400964676.

The previous prime is 400964653. The next prime is 400964689. The reversal of 400964677 is 776469004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 351600001 + 49364676 = 18751^2 + 7026^2 .

It is a cyclic number.

It is not a de Polignac number, because 400964677 - 2⁷ = 400964549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400364677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200482338 + 200482339.

It is an arithmetic number, because the mean of its divisors is an integer number (200482339).

Almost surely, 2^400964677 is an apocalyptic number.

It is an amenable number.

400964677 is a deficient number, since it is larger than the sum of its proper divisors (1).

400964677 is an equidigital number, since it uses as much as digits as its factorization.

400964677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 43.

The square root of 400964677 is about 20024.1024018556. The cubic root of 400964677 is about 737.3981409454.

It can be divided in two parts, 4009 and 64677, that added together give a palindrome (68686).

The spelling of 400964677 in words is "four hundred million, nine hundred sixty-four thousand, six hundred seventy-seven".