990810457 has 32 divisors (see below), whose sum is σ = 1265019392. Its totient is φ = 755080704.

The previous prime is 990810419. The next prime is 990810463. The reversal of 990810457 is 754018099.

990810457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 990810457 - 2¹⁹ = 990286169 is a prime.

It is a deceptive number, since it divides R_990810456.

It is not an unprimeable number, because it can be changed into a prime (990819457) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 345373 + ... + 348229.

It is an arithmetic number, because the mean of its divisors is an integer number (39531856).

Almost surely, 2^990810457 is an apocalyptic number.

It is an amenable number.

990810457 is a deficient number, since it is larger than the sum of its proper divisors (274208935).

990810457 is a wasteful number, since it uses less digits than its factorization.

990810457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3017.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 990810457 is about 31477.1418175158. The cubic root of 990810457 is about 996.9273877233.

The spelling of 990810457 in words is "nine hundred ninety million, eight hundred ten thousand, four hundred fifty-seven".