84081877 has 4 divisors (see below), whose sum is σ = 91725696. Its totient is φ = 76438060.

The previous prime is 84081863. The next prime is 84081883. The reversal of 84081877 is 77818048.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84081877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84081377) 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, 3821893 + ... + 3821914.

It is an arithmetic number, because the mean of its divisors is an integer number (22931424).

Almost surely, 2^84081877 is an apocalyptic number.

It is an amenable number.

84081877 is a deficient number, since it is larger than the sum of its proper divisors (7643819).

84081877 is a wasteful number, since it uses less digits than its factorization.

84081877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7643818.

The product of its (nonzero) digits is 100352, while the sum is 43.

The square root of 84081877 is about 9169.6170585254. The cubic root of 84081877 is about 438.0941621814.

The spelling of 84081877 in words is "eighty-four million, eighty-one thousand, eight hundred seventy-seven".