749799997947 has 144 divisors (see below), whose sum is σ = 1506045235968. Its totient is φ = 347142862080.

The previous prime is 749799997897. The next prime is 749799997997.

749799997947 is a `hidden beast` number, since 7 + 497 + 9 + 9 + 9 + 9 + 79 + 47 = 666.

749799997947 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (749799997897) and next prime (749799997997).

It is not a de Polignac number, because 749799997947 - 2¹² = 749799993851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (749799997997) 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 143 ways as a sum of consecutive naturals, for example, 7527088 + ... + 7626050.

It is an arithmetic number, because the mean of its divisors is an integer number (10458647472).

Almost surely, 2^749799997947 is an apocalyptic number.

749799997947 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

749799997947 is an abundant number, since it is smaller than the sum of its proper divisors (756245238021).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

749799997947 is a wasteful number, since it uses less digits than its factorization.

749799997947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99058 (or 99026 counting only the distinct ones).

The product of its digits is 20415837456, while the sum is 90.

The spelling of 749799997947 in words is "seven hundred forty-nine billion, seven hundred ninety-nine million, nine hundred ninety-seven thousand, nine hundred forty-seven".