72949693 has 2 divisors, whose sum is σ = 72949694. Its totient is φ = 72949692.

The previous prime is 72949673. The next prime is 72949699. The reversal of 72949693 is 39694927.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72369049 + 580644 = 8507^2 + 762^2 .

It is a cyclic number.

It is not a de Polignac number, because 72949693 - 2⁵ = 72949661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72949699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36474846 + 36474847.

It is an arithmetic number, because the mean of its divisors is an integer number (36474847).

Almost surely, 2^72949693 is an apocalyptic number.

It is an amenable number.

72949693 is a deficient number, since it is larger than the sum of its proper divisors (1).

72949693 is an equidigital number, since it uses as much as digits as its factorization.

72949693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 49.

The square root of 72949693 is about 8541.0592434428. The cubic root of 72949693 is about 417.8378930023.

The spelling of 72949693 in words is "seventy-two million, nine hundred forty-nine thousand, six hundred ninety-three".