400983871634 has 4 divisors (see below), whose sum is σ = 601475807454. Its totient is φ = 200491935816.

The previous prime is 400983871601. The next prime is 400983871661. The reversal of 400983871634 is 436178389004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 398346535609 + 2637336025 = 631147^2 + 51355^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100245967907 + ... + 100245967910.

Almost surely, 2^400983871634 is an apocalyptic number.

400983871634 is a deficient number, since it is larger than the sum of its proper divisors (200491935820).

400983871634 is a wasteful number, since it uses less digits than its factorization.

400983871634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200491935819.

The product of its (nonzero) digits is 3483648, while the sum is 53.

The spelling of 400983871634 in words is "four hundred billion, nine hundred eighty-three million, eight hundred seventy-one thousand, six hundred thirty-four".