401000626 has 16 divisors (see below), whose sum is σ = 648807768. Its totient is φ = 184780800.

The previous prime is 401000557. The next prime is 401000627. The reversal of 401000626 is 626000104.

It is a Cunningham number, because it is equal to 20025²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 401000625 + 1 = 20025^2 + 1^2 .

It is not an unprimeable number, because it can be changed into a prime (401000627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4636 + ... + 28696.

Almost surely, 2^401000626 is an apocalyptic number.

401000626 is a deficient number, since it is larger than the sum of its proper divisors (247807142).

401000626 is a wasteful number, since it uses less digits than its factorization.

401000626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24717.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 401000626 is about 20025.0000249688. Note that the first 4 decimals coincide. The cubic root of 401000626 is about 737.4201777441.

The spelling of 401000626 in words is "four hundred one million, six hundred twenty-six", and thus it is an aban number.