40387065 has 16 divisors (see below), whose sum is σ = 68020800. Its totient is φ = 20405952.

The previous prime is 40387049. The next prime is 40387097. The reversal of 40387065 is 56078304.

It is not a de Polignac number, because 40387065 - 2⁴ = 40387049 is a prime.

It is a super-2 number, since 2×40387065² = 3262230038628450, which contains 22 as substring.

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, 70570 + ... + 71139.

It is an arithmetic number, because the mean of its divisors is an integer number (4251300).

Almost surely, 2^40387065 is an apocalyptic number.

It is an amenable number.

40387065 is a deficient number, since it is larger than the sum of its proper divisors (27633735).

40387065 is a wasteful number, since it uses less digits than its factorization.

40387065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141736.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 40387065 is about 6355.0818248076. The cubic root of 40387065 is about 343.0947699155.

The spelling of 40387065 in words is "forty million, three hundred eighty-seven thousand, sixty-five".