84297887 has 4 divisors (see below), whose sum is σ = 85044000. Its totient is φ = 83551776.

The previous prime is 84297847. The next prime is 84297911. The reversal of 84297887 is 78879248.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84297887 - 2⁶ = 84297823 is a prime.

It is a super-2 number, since 2×84297887² = 14212267505329538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84297827) 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, 372887 + ... + 373112.

It is an arithmetic number, because the mean of its divisors is an integer number (21261000).

Almost surely, 2^84297887 is an apocalyptic number.

84297887 is a deficient number, since it is larger than the sum of its proper divisors (746113).

84297887 is a wasteful number, since it uses less digits than its factorization.

84297887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746112.

The product of its digits is 1806336, while the sum is 53.

The square root of 84297887 is about 9181.3880758848. The cubic root of 84297887 is about 438.4690023581.

It can be divided in two parts, 84297 and 887, that added together give a cube (85184 = 44³).

The spelling of 84297887 in words is "eighty-four million, two hundred ninety-seven thousand, eight hundred eighty-seven".