72291799 has 2 divisors, whose sum is σ = 72291800. Its totient is φ = 72291798.

The previous prime is 72291797. The next prime is 72291811. The reversal of 72291799 is 99719227.

It is a weak prime.

It is an emirp because it is prime and its reverse (99719227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72291799 - 2¹ = 72291797 is a prime.

It is a super-2 number, since 2×72291799² = 10452208405312802, which contains 22 as substring.

Together with 72291797, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72291797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36145899 + 36145900.

It is an arithmetic number, because the mean of its divisors is an integer number (36145900).

Almost surely, 2^72291799 is an apocalyptic number.

72291799 is a deficient number, since it is larger than the sum of its proper divisors (1).

72291799 is an equidigital number, since it uses as much as digits as its factorization.

72291799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 142884, while the sum is 46.

The square root of 72291799 is about 8502.4584091897. The cubic root of 72291799 is about 416.5780129964.

The spelling of 72291799 in words is "seventy-two million, two hundred ninety-one thousand, seven hundred ninety-nine".