40931406 has 24 divisors (see below), whose sum is σ = 91970424. Its totient is φ = 13643640.

The previous prime is 40931369. The next prime is 40931411. The reversal of 40931406 is 60413904.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40931406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41625 + ... + 42596.

It is an arithmetic number, because the mean of its divisors is an integer number (3832101).

Almost surely, 2^40931406 is an apocalyptic number.

40931406 is an abundant number, since it is smaller than the sum of its proper divisors (51039018).

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

40931406 is an equidigital number, since it uses as much as digits as its factorization.

40931406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84238 (or 84226 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 40931406 is about 6397.7657037438. The cubic root of 40931406 is about 344.6293183137.

The spelling of 40931406 in words is "forty million, nine hundred thirty-one thousand, four hundred six".