72790093 has 2 divisors, whose sum is σ = 72790094. Its totient is φ = 72790092.

The previous prime is 72790057. The next prime is 72790103. The reversal of 72790093 is 39009727.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69172489 + 3617604 = 8317^2 + 1902^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72790093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72790033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36395046 + 36395047.

It is an arithmetic number, because the mean of its divisors is an integer number (36395047).

Almost surely, 2^72790093 is an apocalyptic number.

It is an amenable number.

72790093 is a deficient number, since it is larger than the sum of its proper divisors (1).

72790093 is an equidigital number, since it uses as much as digits as its factorization.

72790093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23814, while the sum is 37.

The square root of 72790093 is about 8531.7110241733. The cubic root of 72790093 is about 417.5329540006.

The spelling of 72790093 in words is "seventy-two million, seven hundred ninety thousand, ninety-three".