89869649 has 2 divisors, whose sum is σ = 89869650. Its totient is φ = 89869648.

The previous prime is 89869597. The next prime is 89869657. The reversal of 89869649 is 94696898.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82810000 + 7059649 = 9100^2 + 2657^2 .

It is a cyclic number.

It is not a de Polignac number, because 89869649 - 2²⁴ = 73092433 is a prime.

It is a super-2 number, since 2×89869649² = 16153107622766402, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (89862649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44934824 + 44934825.

It is an arithmetic number, because the mean of its divisors is an integer number (44934825).

Almost surely, 2^89869649 is an apocalyptic number.

It is an amenable number.

89869649 is a deficient number, since it is larger than the sum of its proper divisors (1).

89869649 is an equidigital number, since it uses as much as digits as its factorization.

89869649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6718464, while the sum is 59.

The square root of 89869649 is about 9479.9603902126. The cubic root of 89869649 is about 447.9240161977.

The spelling of 89869649 in words is "eighty-nine million, eight hundred sixty-nine thousand, six hundred forty-nine".