912990 has 32 divisors (see below), whose sum is σ = 2360736. Its totient is φ = 224640.

The previous prime is 912979. The next prime is 912991. The reversal of 912990 is 99219.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (912991) by changing a digit.

912990 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 781 + ... + 1560.

It is an arithmetic number, because the mean of its divisors is an integer number (73773).

2⁹¹²⁹⁹⁰ is an apocalyptic number.

912990 is an abundant number, since it is smaller than the sum of its proper divisors (1447746).

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

912990 is a wasteful number, since it uses less digits than its factorization.

912990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2364.

The product of its (nonzero) digits is 1458, while the sum is 30.

The square root of 912990 is about 955.5051020272. The cubic root of 912990 is about 97.0112290823.

It can be divided in two parts, 91 and 2990, that added together give a triangular number (3081 = T₇₈).

The spelling of 912990 in words is "nine hundred twelve thousand, nine hundred ninety".