390464647 has 4 divisors (see below), whose sum is σ = 390643776. Its totient is φ = 390285520.

The previous prime is 390464617. The next prime is 390464651. The reversal of 390464647 is 746464093.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 390464647 - 2¹¹ = 390462599 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 (390464617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86254 + ... + 90667.

It is an arithmetic number, because the mean of its divisors is an integer number (97660944).

Almost surely, 2^390464647 is an apocalyptic number.

390464647 is a deficient number, since it is larger than the sum of its proper divisors (179129).

390464647 is a wasteful number, since it uses less digits than its factorization.

390464647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179128.

The product of its (nonzero) digits is 435456, while the sum is 43.

The square root of 390464647 is about 19760.1783139728. The cubic root of 390464647 is about 730.9043941928.

The spelling of 390464647 in words is "three hundred ninety million, four hundred sixty-four thousand, six hundred forty-seven".