72049339 has 2 divisors, whose sum is σ = 72049340. Its totient is φ = 72049338.

The previous prime is 72049337. The next prime is 72049379. The reversal of 72049339 is 93394027.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72049339 - 2¹ = 72049337 is a prime.

It is a super-2 number, since 2×72049339² = 10382214500673842, which contains 22 as substring.

Together with 72049337, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 72049298 and 72049307.

It is not a weakly prime, because it can be changed into another prime (72049331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36024669 + 36024670.

It is an arithmetic number, because the mean of its divisors is an integer number (36024670).

Almost surely, 2^72049339 is an apocalyptic number.

72049339 is a deficient number, since it is larger than the sum of its proper divisors (1).

72049339 is an equidigital number, since it uses as much as digits as its factorization.

72049339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 37.

The square root of 72049339 is about 8488.1882047938. The cubic root of 72049339 is about 416.1117700011. Note that the first 3 decimals are identical.

The spelling of 72049339 in words is "seventy-two million, forty-nine thousand, three hundred thirty-nine".