990487701 has 48 divisors (see below), whose sum is σ = 1679708160. Its totient is φ = 550761120.

The previous prime is 990487679. The next prime is 990487741. The reversal of 990487701 is 107784099.

It is not a de Polignac number, because 990487701 - 2⁶ = 990487637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990487741) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 351966 + ... + 354768.

It is an arithmetic number, because the mean of its divisors is an integer number (34993920).

Almost surely, 2^990487701 is an apocalyptic number.

It is an amenable number.

990487701 is a deficient number, since it is larger than the sum of its proper divisors (689220459).

990487701 is a wasteful number, since it uses less digits than its factorization.

990487701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2966 (or 2963 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 990487701 is about 31472.0145685020. The cubic root of 990487701 is about 996.8191264380.

The spelling of 990487701 in words is "nine hundred ninety million, four hundred eighty-seven thousand, seven hundred one".