87779433 has 48 divisors (see below), whose sum is σ = 143640000. Its totient is φ = 47472768.

The previous prime is 87779399. The next prime is 87779437. The reversal of 87779433 is 33497778.

It is a happy number.

It is not a de Polignac number, because 87779433 - 2¹⁷ = 87648361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87779437) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 251343 + ... + 251691.

It is an arithmetic number, because the mean of its divisors is an integer number (2992500).

Almost surely, 2^87779433 is an apocalyptic number.

It is an amenable number.

87779433 is a deficient number, since it is larger than the sum of its proper divisors (55860567).

87779433 is a wasteful number, since it uses less digits than its factorization.

87779433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454 (or 447 counting only the distinct ones).

The product of its digits is 889056, while the sum is 48.

The square root of 87779433 is about 9369.0678831995. The cubic root of 87779433 is about 444.4240885515.

The spelling of 87779433 in words is "eighty-seven million, seven hundred seventy-nine thousand, four hundred thirty-three".