431377828979 has 4 divisors (see below), whose sum is σ = 446252926560. Its totient is φ = 416502731400.

The previous prime is 431377828969. The next prime is 431377829023. The reversal of 431377828979 is 979828773134.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 431377828979 - 2²⁴ = 431361051763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431377828909) 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 3 ways as a sum of consecutive naturals, for example, 7437548747 + ... + 7437548804.

It is an arithmetic number, because the mean of its divisors is an integer number (111563231640).

Almost surely, 2^431377828979 is an apocalyptic number.

431377828979 is a deficient number, since it is larger than the sum of its proper divisors (14875097581).

431377828979 is a wasteful number, since it uses less digits than its factorization.

431377828979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14875097580.

The product of its digits is 128024064, while the sum is 68.

The spelling of 431377828979 in words is "four hundred thirty-one billion, three hundred seventy-seven million, eight hundred twenty-eight thousand, nine hundred seventy-nine".