89751919 has 2 divisors, whose sum is σ = 89751920. Its totient is φ = 89751918.

The previous prime is 89751901. The next prime is 89751929. The reversal of 89751919 is 91915798.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89751919 - 2⁵ = 89751887 is a prime.

It is a super-2 number, since 2×89751919² = 16110813928365122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89751929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44875959 + 44875960.

It is an arithmetic number, because the mean of its divisors is an integer number (44875960).

Almost surely, 2^89751919 is an apocalyptic number.

89751919 is a deficient number, since it is larger than the sum of its proper divisors (1).

89751919 is an equidigital number, since it uses as much as digits as its factorization.

89751919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 49.

The square root of 89751919 is about 9473.7489411531. The cubic root of 89751919 is about 447.7283359758.

The spelling of 89751919 in words is "eighty-nine million, seven hundred fifty-one thousand, nine hundred nineteen".