400622432776 has 8 divisors (see below), whose sum is σ = 751167061470. Its totient is φ = 200311216384.

The previous prime is 400622432759. The next prime is 400622432779. The reversal of 400622432776 is 677234226004.

It can be written as a sum of positive squares in only one way, i.e., 310906608100 + 89715824676 = 557590^2 + 299526^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (400622432779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25038902041 + ... + 25038902056.

Almost surely, 2^400622432776 is an apocalyptic number.

It is an amenable number.

400622432776 is a deficient number, since it is larger than the sum of its proper divisors (350544628694).

400622432776 is a wasteful number, since it uses less digits than its factorization.

400622432776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50077804103 (or 50077804099 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 43.

The spelling of 400622432776 in words is "four hundred billion, six hundred twenty-two million, four hundred thirty-two thousand, seven hundred seventy-six".