40402339 has 4 divisors (see below), whose sum is σ = 40444920. Its totient is φ = 40359760.

The previous prime is 40402333. The next prime is 40402357. The reversal of 40402339 is 93320404.

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 40402339 - 2¹¹ = 40400291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40402333) 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, 19834 + ... + 21775.

It is an arithmetic number, because the mean of its divisors is an integer number (10111230).

Almost surely, 2^40402339 is an apocalyptic number.

40402339 is a deficient number, since it is larger than the sum of its proper divisors (42581).

40402339 is an equidigital number, since it uses as much as digits as its factorization.

40402339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42580.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 40402339 is about 6356.2834266574. The cubic root of 40402339 is about 343.1380161795.

The spelling of 40402339 in words is "forty million, four hundred two thousand, three hundred thirty-nine".