390413691 has 18 divisors (see below), whose sum is σ = 594004580. Its totient is φ = 246413880.

The previous prime is 390413663. The next prime is 390413743. The reversal of 390413691 is 196314093.

It is not a de Polignac number, because 390413691 - 2¹¹ = 390411643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390413291) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 257626 + ... + 259136.

Almost surely, 2^390413691 is an apocalyptic number.

390413691 is a deficient number, since it is larger than the sum of its proper divisors (203590889).

390413691 is an equidigital number, since it uses as much as digits as its factorization.

390413691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3047 (or 1533 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 390413691 is about 19758.8889110699. Note that the first 3 decimals coincide. The cubic root of 390413691 is about 730.8725982417.

The spelling of 390413691 in words is "three hundred ninety million, four hundred thirteen thousand, six hundred ninety-one".