3890099665 has 8 divisors (see below), whose sum is σ = 4720570920. Its totient is φ = 3077112192.

The previous prime is 3890099659. The next prime is 3890099699. The reversal of 3890099665 is 5669900983.

It can be written as a sum of positive squares in 4 ways, for example, as 456976 + 3889642689 = 676^2 + 62367^2 .

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 3890099665 - 2³ = 3890099657 is a prime.

It is a super-2 number, since 2×3890099665² = 30265750807266224450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4370454 + ... + 4371343.

It is an arithmetic number, because the mean of its divisors is an integer number (590071365).

Almost surely, 2^3890099665 is an apocalyptic number.

It is an amenable number.

3890099665 is a deficient number, since it is larger than the sum of its proper divisors (830471255).

3890099665 is an equidigital number, since it uses as much as digits as its factorization.

3890099665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8741891.

The product of its (nonzero) digits is 3149280, while the sum is 55.

The square root of 3890099665 is about 62370.6634965510. The cubic root of 3890099665 is about 1572.7278452047.

The spelling of 3890099665 in words is "three billion, eight hundred ninety million, ninety-nine thousand, six hundred sixty-five".