72926969 has 2 divisors, whose sum is σ = 72926970. Its totient is φ = 72926968.

The previous prime is 72926947. The next prime is 72926977. The reversal of 72926969 is 96962927.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36481600 + 36445369 = 6040^2 + 6037^2 .

It is a cyclic number.

It is not a de Polignac number, because 72926969 - 2¹² = 72922873 is a prime.

It is a super-2 number, since 2×72926969² = 10636685615053922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72926989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36463484 + 36463485.

It is an arithmetic number, because the mean of its divisors is an integer number (36463485).

Almost surely, 2^72926969 is an apocalyptic number.

It is an amenable number.

72926969 is a deficient number, since it is larger than the sum of its proper divisors (1).

72926969 is an equidigital number, since it uses as much as digits as its factorization.

72926969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 50.

The square root of 72926969 is about 8539.7288598643. The cubic root of 72926969 is about 417.7945026696.

The spelling of 72926969 in words is "seventy-two million, nine hundred twenty-six thousand, nine hundred sixty-nine".