73979847 has 6 divisors (see below), whose sum is σ = 106859792. Its totient is φ = 49319892.

The previous prime is 73979819. The next prime is 73979849. The reversal of 73979847 is 74897937.

It is not a de Polignac number, because 73979847 - 2¹⁵ = 73947079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73979793 and 73979802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73979849) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4109983 + ... + 4110000.

Almost surely, 2^73979847 is an apocalyptic number.

73979847 is a deficient number, since it is larger than the sum of its proper divisors (32879945).

73979847 is a wasteful number, since it uses less digits than its factorization.

73979847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8219989 (or 8219986 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 54.

The square root of 73979847 is about 8601.1538179479. The cubic root of 73979847 is about 419.7955297248.

The spelling of 73979847 in words is "seventy-three million, nine hundred seventy-nine thousand, eight hundred forty-seven".