406912638 has 32 divisors (see below), whose sum is σ = 896614272. Its totient is φ = 122084000.

The previous prime is 406912637. The next prime is 406912657. The reversal of 406912638 is 836219604.

It is a junction number, because it is equal to n+sod(n) for n = 406912596 and 406912605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406912637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23856 + ... + 37187.

It is an arithmetic number, because the mean of its divisors is an integer number (28019196).

Almost surely, 2^406912638 is an apocalyptic number.

406912638 is an abundant number, since it is smaller than the sum of its proper divisors (489701634).

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

406912638 is a wasteful number, since it uses less digits than its factorization.

406912638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61160.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 406912638 is about 20172.0756988467. The cubic root of 406912638 is about 741.0264778430.

The spelling of 406912638 in words is "four hundred six million, nine hundred twelve thousand, six hundred thirty-eight".