72494819 has 2 divisors, whose sum is σ = 72494820. Its totient is φ = 72494818.

The previous prime is 72494813. The next prime is 72494897. The reversal of 72494819 is 91849427.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72494819 - 2¹² = 72490723 is a prime.

It is a super-2 number, since 2×72494819² = 10510997563685522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72494819.

It is not a weakly prime, because it can be changed into another prime (72494813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36247409 + 36247410.

It is an arithmetic number, because the mean of its divisors is an integer number (36247410).

Almost surely, 2^72494819 is an apocalyptic number.

72494819 is a deficient number, since it is larger than the sum of its proper divisors (1).

72494819 is an equidigital number, since it uses as much as digits as its factorization.

72494819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 44.

The square root of 72494819 is about 8514.3889387319. The cubic root of 72494819 is about 416.9676128408.

The spelling of 72494819 in words is "seventy-two million, four hundred ninety-four thousand, eight hundred nineteen".