84390077 has 8 divisors (see below), whose sum is σ = 89035200. Its totient is φ = 79765344.

The previous prime is 84390073. The next prime is 84390079. The reversal of 84390077 is 77009348.

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

It is not a de Polignac number, because 84390077 - 2² = 84390073 is a prime.

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 84390077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84390073) 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, 3824 + ... + 13542.

It is an arithmetic number, because the mean of its divisors is an integer number (11129400).

Almost surely, 2^84390077 is an apocalyptic number.

It is an amenable number.

84390077 is a deficient number, since it is larger than the sum of its proper divisors (4645123).

84390077 is a wasteful number, since it uses less digits than its factorization.

84390077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10195.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 84390077 is about 9186.4071867080. The cubic root of 84390077 is about 438.6287838666.

The spelling of 84390077 in words is "eighty-four million, three hundred ninety thousand, seventy-seven".