40465139 has 8 divisors (see below), whose sum is σ = 47539632. Its totient is φ = 33956640.

The previous prime is 40465133. The next prime is 40465147. The reversal of 40465139 is 93156404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40465139 - 2⁴ = 40465123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40465133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141344 + ... + 141629.

It is an arithmetic number, because the mean of its divisors is an integer number (5942454).

Almost surely, 2^40465139 is an apocalyptic number.

40465139 is a deficient number, since it is larger than the sum of its proper divisors (7074493).

40465139 is a wasteful number, since it uses less digits than its factorization.

40465139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282997.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 40465139 is about 6361.2215021959. The cubic root of 40465139 is about 343.3157114362.

It can be divided in two parts, 40465 and 139, that added together give a palindrome (40604).

The spelling of 40465139 in words is "forty million, four hundred sixty-five thousand, one hundred thirty-nine".