73979473 has 2 divisors, whose sum is σ = 73979474. Its totient is φ = 73979472.

The previous prime is 73979459. The next prime is 73979501. The reversal of 73979473 is 37497937.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71520849 + 2458624 = 8457^2 + 1568^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73979473 is a prime.

It is not a weakly prime, because it can be changed into another prime (73979413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36989736 + 36989737.

It is an arithmetic number, because the mean of its divisors is an integer number (36989737).

Almost surely, 2^73979473 is an apocalyptic number.

It is an amenable number.

73979473 is a deficient number, since it is larger than the sum of its proper divisors (1).

73979473 is an equidigital number, since it uses as much as digits as its factorization.

73979473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1000188, while the sum is 49.

The square root of 73979473 is about 8601.1320766513. The cubic root of 73979473 is about 419.7948223078.

The spelling of 73979473 in words is "seventy-three million, nine hundred seventy-nine thousand, four hundred seventy-three".