750900991 has 6 divisors (see below), whose sum is σ = 753013760. Its totient is φ = 748794108.

The previous prime is 750900989. The next prime is 750901001. The reversal of 750900991 is 199009057.

It is not a de Polignac number, because 750900991 - 2¹ = 750900989 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 (750900961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 144130 + ... + 149248.

Almost surely, 2^750900991 is an apocalyptic number.

750900991 is a deficient number, since it is larger than the sum of its proper divisors (2112769).

750900991 is an frugal number, since it uses more digits than its factorization.

750900991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5885 (or 5502 counting only the distinct ones).

The product of its (nonzero) digits is 25515, while the sum is 40.

The square root of 750900991 is about 27402.5727076857. The cubic root of 750900991 is about 908.9239751122.

The spelling of 750900991 in words is "seven hundred fifty million, nine hundred thousand, nine hundred ninety-one".