69089749 has 2 divisors, whose sum is σ = 69089750. Its totient is φ = 69089748.

The previous prime is 69089711. The next prime is 69089771. The reversal of 69089749 is 94798096.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37088100 + 32001649 = 6090^2 + 5657^2 .

It is a cyclic number.

It is not a de Polignac number, because 69089749 - 2¹¹ = 69087701 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 69089696 and 69089705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69089789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34544874 + 34544875.

It is an arithmetic number, because the mean of its divisors is an integer number (34544875).

Almost surely, 2^69089749 is an apocalyptic number.

It is an amenable number.

69089749 is a deficient number, since it is larger than the sum of its proper divisors (1).

69089749 is an equidigital number, since it uses as much as digits as its factorization.

69089749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 69089749 is about 8312.0243623320. The cubic root of 69089749 is about 410.3343475373.

The spelling of 69089749 in words is "sixty-nine million, eighty-nine thousand, seven hundred forty-nine".