89780433 has 16 divisors (see below), whose sum is σ = 127833600. Its totient is φ = 55923840.

The previous prime is 89780429. The next prime is 89780473. The reversal of 89780433 is 33408798.

It is not a de Polignac number, because 89780433 - 2² = 89780429 is a prime.

It is a super-2 number, since 2×89780433² = 16121052299334978, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (89780473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13948 + ... + 19341.

It is an arithmetic number, because the mean of its divisors is an integer number (7989600).

Almost surely, 2^89780433 is an apocalyptic number.

It is an amenable number.

89780433 is a deficient number, since it is larger than the sum of its proper divisors (38053167).

89780433 is a wasteful number, since it uses less digits than its factorization.

89780433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33352.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 89780433 is about 9475.2537169197. The cubic root of 89780433 is about 447.7757450792.

The spelling of 89780433 in words is "eighty-nine million, seven hundred eighty thousand, four hundred thirty-three".