390986485 has 8 divisors (see below), whose sum is σ = 496782936. Its totient is φ = 294389760.

The previous prime is 390986483. The next prime is 390986501. The reversal of 390986485 is 584689093.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 188265841 + 202720644 = 13721^2 + 14238^2 .

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

It is not a de Polignac number, because 390986485 - 2¹ = 390986483 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390986483) 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, 2299836 + ... + 2300005.

It is an arithmetic number, because the mean of its divisors is an integer number (62097867).

Almost surely, 2^390986485 is an apocalyptic number.

It is an amenable number.

390986485 is a deficient number, since it is larger than the sum of its proper divisors (105796451).

390986485 is a wasteful number, since it uses less digits than its factorization.

390986485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4599863.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The square root of 390986485 is about 19773.3781888680. The cubic root of 390986485 is about 731.2298559235.

The spelling of 390986485 in words is "three hundred ninety million, nine hundred eighty-six thousand, four hundred eighty-five".