990403017 has 8 divisors (see below), whose sum is σ = 1398216096. Its totient is φ = 621429312.

The previous prime is 990402979. The next prime is 990403027. The reversal of 990403017 is 710304099.

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

It is not a de Polignac number, because 990403017 - 2¹⁴ = 990386633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (990403027) 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, 9709783 + ... + 9709884.

It is an arithmetic number, because the mean of its divisors is an integer number (174777012).

Almost surely, 2^990403017 is an apocalyptic number.

It is an amenable number.

990403017 is a deficient number, since it is larger than the sum of its proper divisors (407813079).

990403017 is a wasteful number, since it uses less digits than its factorization.

990403017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19419687.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 990403017 is about 31470.6691539916. The cubic root of 990403017 is about 996.7907171885.

The spelling of 990403017 in words is "nine hundred ninety million, four hundred three thousand, seventeen".