89770739 has 2 divisors, whose sum is σ = 89770740. Its totient is φ = 89770738.

The previous prime is 89770663. The next prime is 89770741. The reversal of 89770739 is 93707798.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89770739 - 2²⁰ = 88722163 is a prime.

It is a super-2 number, since 2×89770739² = 16117571161212242, which contains 22 as substring.

Together with 89770741, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (89770139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44885369 + 44885370.

It is an arithmetic number, because the mean of its divisors is an integer number (44885370).

Almost surely, 2^89770739 is an apocalyptic number.

89770739 is a deficient number, since it is larger than the sum of its proper divisors (1).

89770739 is an equidigital number, since it uses as much as digits as its factorization.

89770739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 666792, while the sum is 50.

The square root of 89770739 is about 9474.7421600801. The cubic root of 89770739 is about 447.7596283741.

It can be divided in two parts, 89770 and 739, that added together give a palindrome (90509).

The spelling of 89770739 in words is "eighty-nine million, seven hundred seventy thousand, seven hundred thirty-nine".