754109991 has 24 divisors (see below), whose sum is σ = 1110954624. Its totient is φ = 492806160.

The previous prime is 754109989. The next prime is 754110011. The reversal of 754109991 is 199901457.

It is not a de Polignac number, because 754109991 - 2¹ = 754109989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (754101991) 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 23 ways as a sum of consecutive naturals, for example, 124270 + ... + 130196.

It is an arithmetic number, because the mean of its divisors is an integer number (46289776).

Almost surely, 2^754109991 is an apocalyptic number.

754109991 is a deficient number, since it is larger than the sum of its proper divisors (356844633).

754109991 is a wasteful number, since it uses less digits than its factorization.

754109991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6211 (or 6208 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 45.

The square root of 754109991 is about 27461.0631804379. The cubic root of 754109991 is about 910.2169071959.

The spelling of 754109991 in words is "seven hundred fifty-four million, one hundred nine thousand, nine hundred ninety-one".