89199977 has 2 divisors, whose sum is σ = 89199978. Its totient is φ = 89199976.

The previous prime is 89199973. The next prime is 89199991. The reversal of 89199977 is 77999198.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77510416 + 11689561 = 8804^2 + 3419^2 .

It is a cyclic number.

It is not a de Polignac number, because 89199977 - 2² = 89199973 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (89199973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44599988 + 44599989.

It is an arithmetic number, because the mean of its divisors is an integer number (44599989).

Almost surely, 2^89199977 is an apocalyptic number.

It is an amenable number.

89199977 is a deficient number, since it is larger than the sum of its proper divisors (1).

89199977 is an equidigital number, since it uses as much as digits as its factorization.

89199977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2571912, while the sum is 59.

The square root of 89199977 is about 9444.5739448638. The cubic root of 89199977 is about 446.8086587875.

The spelling of 89199977 in words is "eighty-nine million, one hundred ninety-nine thousand, nine hundred seventy-seven".