272430989 has 2 divisors, whose sum is σ = 272430990. Its totient is φ = 272430988.

The previous prime is 272430973. The next prime is 272431013. The reversal of 272430989 is 989034272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 235622500 + 36808489 = 15350^2 + 6067^2 .

It is a cyclic number.

It is not a de Polignac number, because 272430989 - 2⁴ = 272430973 is a prime.

It is a super-3 number, since 3×272430989³ (a number of 26 digits) contains 333 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 (272430289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136215494 + 136215495.

It is an arithmetic number, because the mean of its divisors is an integer number (136215495).

Almost surely, 2^272430989 is an apocalyptic number.

It is an amenable number.

272430989 is a deficient number, since it is larger than the sum of its proper divisors (1).

272430989 is an equidigital number, since it uses as much as digits as its factorization.

272430989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 272430989 is about 16505.4836039421. The cubic root of 272430989 is about 648.2643946292.

The spelling of 272430989 in words is "two hundred seventy-two million, four hundred thirty thousand, nine hundred eighty-nine".