390255087616 has 117 divisors (see below), whose sum is σ = 802521424191. Its totient is φ = 189750091776.

The previous prime is 390255087601. The next prime is 390255087617. The reversal of 390255087616 is 616780552093.

The square root of 390255087616 is 624704.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390255087617) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1719185295 + ... + 1719185521.

Almost surely, 2^390255087616 is an apocalyptic number.

390255087616 is the 624704-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 390255087616

390255087616 is an abundant number, since it is smaller than the sum of its proper divisors (412266336575).

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

390255087616 is an frugal number, since it uses more digits than its factorization.

390255087616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 52.

The spelling of 390255087616 in words is "three hundred ninety billion, two hundred fifty-five million, eighty-seven thousand, six hundred sixteen".