72969433 has 4 divisors (see below), whose sum is σ = 73043620. Its totient is φ = 72895248.

The previous prime is 72969431. The next prime is 72969437. The reversal of 72969433 is 33496927.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33496927 = 4139 ⋅8093.

It can be written as a sum of positive squares in 2 ways, for example, as 68359824 + 4609609 = 8268^2 + 2147^2 .

It is a cyclic number.

It is not a de Polignac number, because 72969433 - 2¹ = 72969431 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72969433.

It is not an unprimeable number, because it can be changed into a prime (72969431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35598 + ... + 37591.

It is an arithmetic number, because the mean of its divisors is an integer number (18260905).

Almost surely, 2^72969433 is an apocalyptic number.

It is an amenable number.

72969433 is a deficient number, since it is larger than the sum of its proper divisors (74187).

72969433 is an equidigital number, since it uses as much as digits as its factorization.

72969433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74186.

The product of its digits is 244944, while the sum is 43.

The square root of 72969433 is about 8542.2147596510. The cubic root of 72969433 is about 417.8755782244.

The spelling of 72969433 in words is "seventy-two million, nine hundred sixty-nine thousand, four hundred thirty-three".