72322469 has 2 divisors, whose sum is σ = 72322470. Its totient is φ = 72322468.

The previous prime is 72322451. The next prime is 72322489. The reversal of 72322469 is 96422327.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68674369 + 3648100 = 8287^2 + 1910^2 .

It is a cyclic number.

It is not a de Polignac number, because 72322469 - 2⁸ = 72322213 is a prime.

It is a super-2 number, since 2×72322469² = 10461079044511922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72322409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36161234 + 36161235.

It is an arithmetic number, because the mean of its divisors is an integer number (36161235).

Almost surely, 2^72322469 is an apocalyptic number.

It is an amenable number.

72322469 is a deficient number, since it is larger than the sum of its proper divisors (1).

72322469 is an equidigital number, since it uses as much as digits as its factorization.

72322469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 35.

The square root of 72322469 is about 8504.2618139378. The cubic root of 72322469 is about 416.6369161336.

The spelling of 72322469 in words is "seventy-two million, three hundred twenty-two thousand, four hundred sixty-nine".