84287649 has 16 divisors (see below), whose sum is σ = 121243392. Its totient is φ = 51886848.

The previous prime is 84287639. The next prime is 84287689. The reversal of 84287649 is 94678248.

It is not a de Polignac number, because 84287649 - 2⁴ = 84287633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84287598 and 84287607.

It is not an unprimeable number, because it can be changed into a prime (84287639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12889 + ... + 18294.

It is an arithmetic number, because the mean of its divisors is an integer number (7577712).

Almost surely, 2^84287649 is an apocalyptic number.

It is an amenable number.

84287649 is a deficient number, since it is larger than the sum of its proper divisors (36955743).

84287649 is a wasteful number, since it uses less digits than its factorization.

84287649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31256.

The product of its digits is 774144, while the sum is 48.

The square root of 84287649 is about 9180.8305179869. The cubic root of 84287649 is about 438.4512509152.

The spelling of 84287649 in words is "eighty-four million, two hundred eighty-seven thousand, six hundred forty-nine".