390212 has 6 divisors (see below), whose sum is σ = 682878. Its totient is φ = 195104.

The previous prime is 390211. The next prime is 390223. The reversal of 390212 is 212093.

It can be written as a sum of positive squares in only one way, i.e., 217156 + 173056 = 466^2 + 416^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48773 + ... + 48780.

It is an arithmetic number, because the mean of its divisors is an integer number (113813).

2³⁹⁰²¹² is an apocalyptic number.

It is an amenable number.

390212 is a deficient number, since it is larger than the sum of its proper divisors (292666).

390212 is a wasteful number, since it uses less digits than its factorization.

390212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97557 (or 97555 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 390212 is about 624.6695126225. The cubic root of 390212 is about 73.0746718250.

The spelling of 390212 in words is "three hundred ninety thousand, two hundred twelve".