390893244 has 24 divisors (see below), whose sum is σ = 1042382208. Its totient is φ = 111683760.

The previous prime is 390893207. The next prime is 390893267. The reversal of 390893244 is 442398093.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 390893196 and 390893205.

It is a congruent number.

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, 2326662 + ... + 2326829.

It is an arithmetic number, because the mean of its divisors is an integer number (43432592).

Almost surely, 2^390893244 is an apocalyptic number.

It is an amenable number.

390893244 is an abundant number, since it is smaller than the sum of its proper divisors (651488964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

390893244 is a wasteful number, since it uses less digits than its factorization.

390893244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4653505 (or 4653503 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 390893244 is about 19771.0203075107. The cubic root of 390893244 is about 731.1717243119.

The spelling of 390893244 in words is "three hundred ninety million, eight hundred ninety-three thousand, two hundred forty-four".