84407249 has 4 divisors (see below), whose sum is σ = 86688564. Its totient is φ = 82125936.

The previous prime is 84407231. The next prime is 84407353. The reversal of 84407249 is 94270448.

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

It can be written as a sum of positive squares in 2 ways, for example, as 48790225 + 35617024 = 6985^2 + 5968^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84407249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84407209) 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, 1140602 + ... + 1140675.

It is an arithmetic number, because the mean of its divisors is an integer number (21672141).

Almost surely, 2^84407249 is an apocalyptic number.

It is an amenable number.

84407249 is a deficient number, since it is larger than the sum of its proper divisors (2281315).

84407249 is a wasteful number, since it uses less digits than its factorization.

84407249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2281314.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 84407249 is about 9187.3417809506. The cubic root of 84407249 is about 438.6585331093.

The spelling of 84407249 in words is "eighty-four million, four hundred seven thousand, two hundred forty-nine".