89421777 has 24 divisors (see below), whose sum is σ = 132762240. Its totient is φ = 57971040.

The previous prime is 89421767. The next prime is 89421781. The reversal of 89421777 is 77712498.

It is a happy number.

It is not a de Polignac number, because 89421777 - 2⁶ = 89421713 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (89421737) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75127 + ... + 76307.

It is an arithmetic number, because the mean of its divisors is an integer number (5531760).

Almost surely, 2^89421777 is an apocalyptic number.

It is an amenable number.

89421777 is a deficient number, since it is larger than the sum of its proper divisors (43340463).

89421777 is a wasteful number, since it uses less digits than its factorization.

89421777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1413 (or 1410 counting only the distinct ones).

The product of its digits is 197568, while the sum is 45.

The square root of 89421777 is about 9456.3088464792. The cubic root of 89421777 is about 447.1786892755.

The spelling of 89421777 in words is "eighty-nine million, four hundred twenty-one thousand, seven hundred seventy-seven".