749789987947 has 32 divisors (see below), whose sum is σ = 1016678605824. Its totient is φ = 533969712000.

The previous prime is 749789987927. The next prime is 749789987951.

It is a happy number.

749789987947 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 749789987947 - 2⁷ = 749789987819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (749789987927) 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, 3607023 + ... + 3809224.

It is an arithmetic number, because the mean of its divisors is an integer number (31771206432).

Almost surely, 2^749789987947 is an apocalyptic number.

749789987947 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

749789987947 is a deficient number, since it is larger than the sum of its proper divisors (266888617877).

749789987947 is a wasteful number, since it uses less digits than its factorization.

749789987947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7416379.

The product of its digits is 16131032064, while the sum is 88.

The spelling of 749789987947 in words is "seven hundred forty-nine billion, seven hundred eighty-nine million, nine hundred eighty-seven thousand, nine hundred forty-seven".