69739489 has 2 divisors, whose sum is σ = 69739490. Its totient is φ = 69739488.

The previous prime is 69739477. The next prime is 69739513. The reversal of 69739489 is 98493796.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54878464 + 14861025 = 7408^2 + 3855^2 .

It is a cyclic number.

It is not a de Polignac number, because 69739489 - 2²³ = 61350881 is a prime.

It is a super-2 number, since 2×69739489² = 9727192651962242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (69739589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34869744 + 34869745.

It is an arithmetic number, because the mean of its divisors is an integer number (34869745).

Almost surely, 2^69739489 is an apocalyptic number.

It is an amenable number.

69739489 is a deficient number, since it is larger than the sum of its proper divisors (1).

69739489 is an equidigital number, since it uses as much as digits as its factorization.

69739489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2939328, while the sum is 55.

The square root of 69739489 is about 8351.0172434261. The cubic root of 69739489 is about 411.6166372206.

It can be divided in two parts, 697 and 39489, that added together give a triangular number (40186 = T₂₈₃).

The spelling of 69739489 in words is "sixty-nine million, seven hundred thirty-nine thousand, four hundred eighty-nine".