3890390465 has 16 divisors (see below), whose sum is σ = 5029069248. Its totient is φ = 2872053696.

The previous prime is 3890390437. The next prime is 3890390489. The reversal of 3890390465 is 5640930983.

It is a cyclic number.

It is not a de Polignac number, because 3890390465 - 2²² = 3886196161 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288974 + ... + 302136.

It is an arithmetic number, because the mean of its divisors is an integer number (314316828).

Almost surely, 2^3890390465 is an apocalyptic number.

It is an amenable number.

3890390465 is a deficient number, since it is larger than the sum of its proper divisors (1138678783).

3890390465 is a wasteful number, since it uses less digits than its factorization.

3890390465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17728.

The product of its (nonzero) digits is 699840, while the sum is 47.

The square root of 3890390465 is about 62372.9946771838. The cubic root of 3890390465 is about 1572.7670333919.

The spelling of 3890390465 in words is "three billion, eight hundred ninety million, three hundred ninety thousand, four hundred sixty-five".