90877277809 has 8 divisors (see below), whose sum is σ = 91298765952. Its totient is φ = 90456497040.

The previous prime is 90877277773. The next prime is 90877277819.

It is a happy number.

90877277809 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90877277809 - 2⁹ = 90877277297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90877277819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81567 + ... + 434059.

It is an arithmetic number, because the mean of its divisors is an integer number (11412345744).

Almost surely, 2^90877277809 is an apocalyptic number.

It is an amenable number.

90877277809 is a deficient number, since it is larger than the sum of its proper divisors (421488143).

90877277809 is a wasteful number, since it uses less digits than its factorization.

90877277809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353687.

The product of its (nonzero) digits is 24893568, while the sum is 64.

The spelling of 90877277809 in words is "ninety billion, eight hundred seventy-seven million, two hundred seventy-seven thousand, eight hundred nine".