390550 has 24 divisors (see below), whose sum is σ = 743256. Its totient is φ = 152640.

The previous prime is 390539. The next prime is 390553. The reversal of 390550 is 55093.

It is a nialpdrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3597 + ... + 3703.

It is an arithmetic number, because the mean of its divisors is an integer number (30969).

2³⁹⁰⁵⁵⁰ is an apocalyptic number.

390550 is a deficient number, since it is larger than the sum of its proper divisors (352706).

390550 is a wasteful number, since it uses less digits than its factorization.

390550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 675, while the sum is 22.

The square root of 390550 is about 624.9399971197. The cubic root of 390550 is about 73.0957647275.

The spelling of 390550 in words is "three hundred ninety thousand, five hundred fifty".