990370453 has 8 divisors (see below), whose sum is σ = 1040793248. Its totient is φ = 941192784.

The previous prime is 990370399. The next prime is 990370477. The reversal of 990370453 is 354073099.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-990370453 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 (990373453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309651 + ... + 312832.

It is an arithmetic number, because the mean of its divisors is an integer number (130099156).

Almost surely, 2^990370453 is an apocalyptic number.

It is an amenable number.

990370453 is a deficient number, since it is larger than the sum of its proper divisors (50422795).

990370453 is a wasteful number, since it uses less digits than its factorization.

990370453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622563.

The product of its (nonzero) digits is 102060, while the sum is 40.

The square root of 990370453 is about 31470.1517791065. The cubic root of 990370453 is about 996.7797923939.

The spelling of 990370453 in words is "nine hundred ninety million, three hundred seventy thousand, four hundred fifty-three".