400366512346 has 8 divisors (see below), whose sum is σ = 606741003540. Its totient is φ = 198119511168.

The previous prime is 400366512331. The next prime is 400366512349. The reversal of 400366512346 is 643215663004.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 345462993121 + 54903519225 = 587761^2 + 234315^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 400366512299 and 400366512308.

It is not an unprimeable number, because it can be changed into a prime (400366512349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1031872261 + ... + 1031872648.

Almost surely, 2^400366512346 is an apocalyptic number.

400366512346 is a deficient number, since it is larger than the sum of its proper divisors (206374491194).

400366512346 is a wasteful number, since it uses less digits than its factorization.

400366512346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2063745008.

The product of its (nonzero) digits is 311040, while the sum is 40.

The spelling of 400366512346 in words is "four hundred billion, three hundred sixty-six million, five hundred twelve thousand, three hundred forty-six".