787632979 has 4 divisors (see below), whose sum is σ = 900151984. Its totient is φ = 675113976.

The previous prime is 787632971. The next prime is 787632983. The reversal of 787632979 is 979236787.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 979236787 = 401 ⋅2441987.

It is a cyclic number.

It is not a de Polignac number, because 787632979 - 2³ = 787632971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (787632971) 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 3 ways as a sum of consecutive naturals, for example, 56259492 + ... + 56259505.

It is an arithmetic number, because the mean of its divisors is an integer number (225037996).

Almost surely, 2^787632979 is an apocalyptic number.

787632979 is a deficient number, since it is larger than the sum of its proper divisors (112519005).

787632979 is a wasteful number, since it uses less digits than its factorization.

787632979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112519004.

The product of its digits is 8001504, while the sum is 58.

The square root of 787632979 is about 28064.7996429691. The cubic root of 787632979 is about 923.5093513199.

The spelling of 787632979 in words is "seven hundred eighty-seven million, six hundred thirty-two thousand, nine hundred seventy-nine".