73405879 has 2 divisors, whose sum is σ = 73405880. Its totient is φ = 73405878.

The previous prime is 73405837. The next prime is 73405883. The reversal of 73405879 is 97850437.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73405879 - 2⁷ = 73405751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73405679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36702939 + 36702940.

It is an arithmetic number, because the mean of its divisors is an integer number (36702940).

Almost surely, 2^73405879 is an apocalyptic number.

73405879 is a deficient number, since it is larger than the sum of its proper divisors (1).

73405879 is an equidigital number, since it uses as much as digits as its factorization.

73405879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 73405879 is about 8567.7230930977. The cubic root of 73405879 is about 418.7070574810.

The spelling of 73405879 in words is "seventy-three million, four hundred five thousand, eight hundred seventy-nine".