400480477 has 2 divisors, whose sum is σ = 400480478. Its totient is φ = 400480476.

The previous prime is 400480469. The next prime is 400480481. The reversal of 400480477 is 774084004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 296562841 + 103917636 = 17221^2 + 10194^2 .

It is a cyclic number.

It is not a de Polignac number, because 400480477 - 2³ = 400480469 is a prime.

It is a super-2 number, since 2×400480477² = 320769224916295058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400480427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200240238 + 200240239.

It is an arithmetic number, because the mean of its divisors is an integer number (200240239).

Almost surely, 2^400480477 is an apocalyptic number.

It is an amenable number.

400480477 is a deficient number, since it is larger than the sum of its proper divisors (1).

400480477 is an equidigital number, since it uses as much as digits as its factorization.

400480477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25088, while the sum is 34.

The square root of 400480477 is about 20012.0083200063. The cubic root of 400480477 is about 737.1011970838.

The spelling of 400480477 in words is "four hundred million, four hundred eighty thousand, four hundred seventy-seven".