990415542 has 16 divisors (see below), whose sum is σ = 1981374192. Its totient is φ = 330048000.

The previous prime is 990415541. The next prime is 990415553. The reversal of 990415542 is 245514099.

It is a self number, because there is not a number n which added to its sum of digits gives 990415542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990415541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3378 + ... + 44634.

It is an arithmetic number, because the mean of its divisors is an integer number (123835887).

Almost surely, 2^990415542 is an apocalyptic number.

990415542 is an abundant number, since it is smaller than the sum of its proper divisors (990958650).

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

990415542 is a wasteful number, since it uses less digits than its factorization.

990415542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45263.

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 990415542 is about 31470.8681481779. The cubic root of 990415542 is about 996.7949190979.

The spelling of 990415542 in words is "nine hundred ninety million, four hundred fifteen thousand, five hundred forty-two".