79381634 has 4 divisors (see below), whose sum is σ = 119072454. Its totient is φ = 39690816.

The previous prime is 79381597. The next prime is 79381663. The reversal of 79381634 is 43618397.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43618397 = 47 ⋅928051.

It can be written as a sum of positive squares in only one way, i.e., 57805609 + 21576025 = 7603^2 + 4645^2 .

It is a junction number, because it is equal to n+sod(n) for n = 79381591 and 79381600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19845407 + ... + 19845410.

Almost surely, 2^79381634 is an apocalyptic number.

79381634 is a deficient number, since it is larger than the sum of its proper divisors (39690820).

79381634 is a wasteful number, since it uses less digits than its factorization.

79381634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39690819.

The product of its digits is 108864, while the sum is 41.

The square root of 79381634 is about 8909.6371418818. The cubic root of 79381634 is about 429.7738742567.

The spelling of 79381634 in words is "seventy-nine million, three hundred eighty-one thousand, six hundred thirty-four".