89277691 has 2 divisors, whose sum is σ = 89277692. Its totient is φ = 89277690.

The previous prime is 89277677. The next prime is 89277731. The reversal of 89277691 is 19677298.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89277691 - 2¹⁷ = 89146619 is a prime.

It is a super-2 number, since 2×89277691² = 15941012220582962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (89277641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44638845 + 44638846.

It is an arithmetic number, because the mean of its divisors is an integer number (44638846).

Almost surely, 2^89277691 is an apocalyptic number.

89277691 is a deficient number, since it is larger than the sum of its proper divisors (1).

89277691 is an equidigital number, since it uses as much as digits as its factorization.

89277691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 49.

The square root of 89277691 is about 9448.6872633186. The cubic root of 89277691 is about 446.9383793328.

The spelling of 89277691 in words is "eighty-nine million, two hundred seventy-seven thousand, six hundred ninety-one".