990430951 has 8 divisors (see below), whose sum is σ = 1001300400. Its totient is φ = 979614528.

The previous prime is 990430921. The next prime is 990430967. The reversal of 990430951 is 159034099.

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

It is a cyclic number.

It is not a de Polignac number, because 990430951 - 2¹³ = 990422759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990430921) 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, 24900 + ... + 50998.

It is an arithmetic number, because the mean of its divisors is an integer number (125162550).

Almost surely, 2^990430951 is an apocalyptic number.

990430951 is a deficient number, since it is larger than the sum of its proper divisors (10869449).

990430951 is a wasteful number, since it uses less digits than its factorization.

990430951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26513.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 990430951 is about 31471.1129609361. The cubic root of 990430951 is about 996.8000884881.

The spelling of 990430951 in words is "nine hundred ninety million, four hundred thirty thousand, nine hundred fifty-one".