89951761 has 2 divisors, whose sum is σ = 89951762. Its totient is φ = 89951760.

The previous prime is 89951723. The next prime is 89951791. The reversal of 89951761 is 16715998.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84916225 + 5035536 = 9215^2 + 2244^2 .

It is a cyclic number.

It is not a de Polignac number, because 89951761 - 2⁷ = 89951633 is a prime.

It is a super-2 number, since 2×89951761² = 16182638614002242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (89951791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44975880 + 44975881.

It is an arithmetic number, because the mean of its divisors is an integer number (44975881).

Almost surely, 2^89951761 is an apocalyptic number.

It is an amenable number.

89951761 is a deficient number, since it is larger than the sum of its proper divisors (1).

89951761 is an equidigital number, since it uses as much as digits as its factorization.

89951761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 46.

The square root of 89951761 is about 9484.2902212026. The cubic root of 89951761 is about 448.0603942416.

The spelling of 89951761 in words is "eighty-nine million, nine hundred fifty-one thousand, seven hundred sixty-one".