407490631 has 4 divisors (see below), whose sum is σ = 408792832. Its totient is φ = 406188432.

The previous prime is 407490619. The next prime is 407490637. The reversal of 407490631 is 136094704.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 407490631 - 2¹⁵ = 407457863 is a prime.

It is a super-2 number, since 2×407490631² = 332097228705556322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (407490637) 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, 650631 + ... + 651256.

It is an arithmetic number, because the mean of its divisors is an integer number (102198208).

Almost surely, 2^407490631 is an apocalyptic number.

407490631 is a deficient number, since it is larger than the sum of its proper divisors (1302201).

407490631 is a wasteful number, since it uses less digits than its factorization.

407490631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302200.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 407490631 is about 20186.3971773073. The cubic root of 407490631 is about 741.3771718596.

The spelling of 407490631 in words is "four hundred seven million, four hundred ninety thousand, six hundred thirty-one".