40439274406 has 32 divisors (see below), whose sum is σ = 66348108288. Its totient is φ = 18429956160.

The previous prime is 40439274361. The next prime is 40439274437. The reversal of 40439274406 is 60447293404.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168226 + ... + 330421.

It is an arithmetic number, because the mean of its divisors is an integer number (2073378384).

Almost surely, 2^40439274406 is an apocalyptic number.

40439274406 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

40439274406 is a deficient number, since it is larger than the sum of its proper divisors (25908833882).

40439274406 is a wasteful number, since it uses less digits than its factorization.

40439274406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498756.

The product of its (nonzero) digits is 580608, while the sum is 43.

The spelling of 40439274406 in words is "forty billion, four hundred thirty-nine million, two hundred seventy-four thousand, four hundred six".