990718450 has 24 divisors (see below), whose sum is σ = 1845858420. Its totient is φ = 395616000.

The previous prime is 990718447. The next prime is 990718471. The reversal of 990718450 is 54817099.

It can be written as a sum of positive squares in 6 ways, for example, as 477378801 + 513339649 = 21849^2 + 22657^2 .

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 990718397 and 990718406.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13566 + ... + 46534.

Almost surely, 2^990718450 is an apocalyptic number.

990718450 is a deficient number, since it is larger than the sum of its proper divisors (855139970).

990718450 is a wasteful number, since it uses less digits than its factorization.

990718450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33582 (or 33577 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 990718450 is about 31475.6802944750. The cubic root of 990718450 is about 996.8965284279.

The spelling of 990718450 in words is "nine hundred ninety million, seven hundred eighteen thousand, four hundred fifty".