90783877 has 4 divisors (see below), whose sum is σ = 91933120. Its totient is φ = 89634636.

The previous prime is 90783871. The next prime is 90783887. The reversal of 90783877 is 77838709.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77838709 = 13 ⋅5987593.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90783877 is a prime.

It is a super-2 number, since 2×90783877² = 16483424646302258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90783877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90783871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 574503 + ... + 574660.

It is an arithmetic number, because the mean of its divisors is an integer number (22983280).

Almost surely, 2^90783877 is an apocalyptic number.

It is an amenable number.

90783877 is a deficient number, since it is larger than the sum of its proper divisors (1149243).

90783877 is a wasteful number, since it uses less digits than its factorization.

90783877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149242.

The product of its (nonzero) digits is 592704, while the sum is 49.

The square root of 90783877 is about 9528.0573570902. The cubic root of 90783877 is about 449.4377785221.

The spelling of 90783877 in words is "ninety million, seven hundred eighty-three thousand, eight hundred seventy-seven".