72444969 has 8 divisors (see below), whose sum is σ = 107325920. Its totient is φ = 48296628.

The previous prime is 72444941. The next prime is 72444971. The reversal of 72444969 is 96944427.

It is not a de Polignac number, because 72444969 - 2⁵ = 72444937 is a prime.

It is a super-2 number, since 2×72444969² = 10496547066821922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72444919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1341547 + ... + 1341600.

It is an arithmetic number, because the mean of its divisors is an integer number (13415740).

Almost surely, 2^72444969 is an apocalyptic number.

It is an amenable number.

72444969 is a deficient number, since it is larger than the sum of its proper divisors (34880951).

72444969 is a wasteful number, since it uses less digits than its factorization.

72444969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2683156 (or 2683150 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 72444969 is about 8511.4610379182. The cubic root of 72444969 is about 416.8720170361.

The spelling of 72444969 in words is "seventy-two million, four hundred forty-four thousand, nine hundred sixty-nine".