400406626600 has 24 divisors (see below), whose sum is σ = 930945407310. Its totient is φ = 160162650560.

The previous prime is 400406626589. The next prime is 400406626649. The reversal of 400406626600 is 6626604004.

It can be written as a sum of positive squares in 3 ways, for example, as 248947110916 + 151459515684 = 498946^2 + 389178^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1001016367 + ... + 1001016766.

Almost surely, 2^400406626600 is an apocalyptic number.

400406626600 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400406626600 is an abundant number, since it is smaller than the sum of its proper divisors (530538780710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400406626600 is a wasteful number, since it uses less digits than its factorization.

400406626600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002033149 (or 2002033140 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

The spelling of 400406626600 in words is "four hundred billion, four hundred six million, six hundred twenty-six thousand, six hundred".