84400077 has 8 divisors (see below), whose sum is σ = 112580064. Its totient is φ = 56243408.

The previous prime is 84400067. The next prime is 84400093. The reversal of 84400077 is 77000448.

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 84400077 - 2⁴ = 84400061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84400037) 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, 6118 + ... + 14360.

It is an arithmetic number, because the mean of its divisors is an integer number (14072508).

Almost surely, 2^84400077 is an apocalyptic number.

It is an amenable number.

84400077 is a deficient number, since it is larger than the sum of its proper divisors (28179987).

84400077 is a wasteful number, since it uses less digits than its factorization.

84400077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11659.

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 84400077 is about 9186.9514530120. The cubic root of 84400077 is about 438.6461086310.

The spelling of 84400077 in words is "eighty-four million, four hundred thousand, seventy-seven".