40831406 has 40 divisors (see below), whose sum is σ = 78047064. Its totient is φ = 15887760.

The previous prime is 40831403. The next prime is 40831409. The reversal of 40831406 is 60413804.

It is an interprime number because it is at equal distance from previous prime (40831403) and next prime (40831409).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40831403) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 52436 + ... + 53208.

Almost surely, 2^40831406 is an apocalyptic number.

40831406 is a deficient number, since it is larger than the sum of its proper divisors (37215658).

40831406 is an equidigital number, since it uses as much as digits as its factorization.

40831406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814 (or 793 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 40831406 is about 6389.9456961699. The cubic root of 40831406 is about 344.3484334630.

The spelling of 40831406 in words is "forty million, eight hundred thirty-one thousand, four hundred six".