400096681 has 4 divisors (see below), whose sum is σ = 400367232. Its totient is φ = 399826132.

The previous prime is 400096679. The next prime is 400096691. The reversal of 400096681 is 186690004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 400096681 - 2¹ = 400096679 is a prime.

It is a super-2 number, since 2×400096681² = 320154708294431522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400096691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133045 + ... + 136018.

It is an arithmetic number, because the mean of its divisors is an integer number (100091808).

Almost surely, 2^400096681 is an apocalyptic number.

It is an amenable number.

400096681 is a deficient number, since it is larger than the sum of its proper divisors (270551).

400096681 is a wasteful number, since it uses less digits than its factorization.

400096681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270550.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 400096681 is about 20002.4168789674. The cubic root of 400096681 is about 736.8656575876.

The spelling of 400096681 in words is "four hundred million, ninety-six thousand, six hundred eighty-one".