84005377 has 4 divisors (see below), whose sum is σ = 84561856. Its totient is φ = 83448900.

The previous prime is 84005353. The next prime is 84005387. The reversal of 84005377 is 77350048.

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 not a de Polignac number, because 84005377 - 2¹¹ = 84003329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84005387) 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, 278013 + ... + 278314.

It is an arithmetic number, because the mean of its divisors is an integer number (21140464).

Almost surely, 2^84005377 is an apocalyptic number.

It is an amenable number.

84005377 is a deficient number, since it is larger than the sum of its proper divisors (556479).

84005377 is a wasteful number, since it uses less digits than its factorization.

84005377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556478.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 84005377 is about 9165.4447246165. Note that the first 3 decimals coincide. The cubic root of 84005377 is about 437.9612585015.

The spelling of 84005377 in words is "eighty-four million, five thousand, three hundred seventy-seven".