400857215347 has 8 divisors (see below), whose sum is σ = 403683070752. Its totient is φ = 398034811200.

The previous prime is 400857215329. The next prime is 400857215377. The reversal of 400857215347 is 743512758004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400857215347 - 2²³ = 400848826739 is a prime.

It is a super-2 number, since 2×400857215347² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400857215297 and 400857215306.

It is not an unprimeable number, because it can be changed into a prime (400857215327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 629479 + ... + 1094512.

It is an arithmetic number, because the mean of its divisors is an integer number (50460383844).

Almost surely, 2^400857215347 is an apocalyptic number.

400857215347 is a deficient number, since it is larger than the sum of its proper divisors (2825855405).

400857215347 is a wasteful number, since it uses less digits than its factorization.

400857215347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1725629.

The product of its (nonzero) digits is 940800, while the sum is 46.

The spelling of 400857215347 in words is "four hundred billion, eight hundred fifty-seven million, two hundred fifteen thousand, three hundred forty-seven".