89919451 has 2 divisors, whose sum is σ = 89919452. Its totient is φ = 89919450.

The previous prime is 89919421. The next prime is 89919469. The reversal of 89919451 is 15491998.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89919451 - 2¹⁵ = 89886683 is a prime.

It is not a weakly prime, because it can be changed into another prime (89919421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44959725 + 44959726.

It is an arithmetic number, because the mean of its divisors is an integer number (44959726).

Almost surely, 2^89919451 is an apocalyptic number.

89919451 is a deficient number, since it is larger than the sum of its proper divisors (1).

89919451 is an equidigital number, since it uses as much as digits as its factorization.

89919451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 46.

The square root of 89919451 is about 9482.5867251505. The cubic root of 89919451 is about 448.0067411693.

The spelling of 89919451 in words is "eighty-nine million, nine hundred nineteen thousand, four hundred fifty-one".