73979413 has 2 divisors, whose sum is σ = 73979414. Its totient is φ = 73979412.

The previous prime is 73979351. The next prime is 73979429. The reversal of 73979413 is 31497937.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53846244 + 20133169 = 7338^2 + 4487^2 .

It is a cyclic number.

It is not a de Polignac number, because 73979413 - 2¹³ = 73971221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73979413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73979453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36989706 + 36989707.

It is an arithmetic number, because the mean of its divisors is an integer number (36989707).

Almost surely, 2^73979413 is an apocalyptic number.

It is an amenable number.

73979413 is a deficient number, since it is larger than the sum of its proper divisors (1).

73979413 is an equidigital number, since it uses as much as digits as its factorization.

73979413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 142884, while the sum is 43.

The square root of 73979413 is about 8601.1285887376. The cubic root of 73979413 is about 419.7947088183.

The spelling of 73979413 in words is "seventy-three million, nine hundred seventy-nine thousand, four hundred thirteen".