990207937 has 8 divisors (see below), whose sum is σ = 1050200640. Its totient is φ = 931626960.

The previous prime is 990207917. The next prime is 990207947. The reversal of 990207937 is 739702099.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 990207937 - 2⁷ = 990207809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990207917) 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, 351487 + ... + 354292.

It is an arithmetic number, because the mean of its divisors is an integer number (131275080).

Almost surely, 2^990207937 is an apocalyptic number.

It is an amenable number.

990207937 is a deficient number, since it is larger than the sum of its proper divisors (59992703).

990207937 is a wasteful number, since it uses less digits than its factorization.

990207937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705863.

The product of its (nonzero) digits is 214326, while the sum is 46.

The square root of 990207937 is about 31467.5696074546. The cubic root of 990207937 is about 996.7252668286.

The spelling of 990207937 in words is "nine hundred ninety million, two hundred seven thousand, nine hundred thirty-seven".