84031249 has 4 divisors (see below), whose sum is σ = 85182436. Its totient is φ = 82880064.

The previous prime is 84031247. The next prime is 84031303. The reversal of 84031249 is 94213048.

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 25401600 + 58629649 = 5040^2 + 7657^2 .

It is a cyclic number.

It is not a de Polignac number, because 84031249 - 2¹ = 84031247 is a prime.

It is a super-2 number, since 2×84031249² = 14122501617000002, which contains 22 as substring.

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 84031249.

It is not an unprimeable number, because it can be changed into a prime (84031247) 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, 575484 + ... + 575629.

It is an arithmetic number, because the mean of its divisors is an integer number (21295609).

Almost surely, 2^84031249 is an apocalyptic number.

It is an amenable number.

84031249 is a deficient number, since it is larger than the sum of its proper divisors (1151187).

84031249 is a wasteful number, since it uses less digits than its factorization.

84031249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151186.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 84031249 is about 9166.8560041052. The cubic root of 84031249 is about 438.0062150310.

The spelling of 84031249 in words is "eighty-four million, thirty-one thousand, two hundred forty-nine".