990285790 has 16 divisors (see below), whose sum is σ = 1919631168. Its totient is φ = 365643936.

The previous prime is 990285787. The next prime is 990285809. The reversal of 990285790 is 97582099.

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, 3808662 + ... + 3808921.

It is an arithmetic number, because the mean of its divisors is an integer number (119976948).

Almost surely, 2^990285790 is an apocalyptic number.

990285790 is a deficient number, since it is larger than the sum of its proper divisors (929345378).

990285790 is a wasteful number, since it uses less digits than its factorization.

990285790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7617603.

The product of its (nonzero) digits is 408240, while the sum is 49.

The square root of 990285790 is about 31468.8066186184. The cubic root of 990285790 is about 996.7513879478.

The spelling of 990285790 in words is "nine hundred ninety million, two hundred eighty-five thousand, seven hundred ninety".