84431713 has 2 divisors, whose sum is σ = 84431714. Its totient is φ = 84431712.

The previous prime is 84431701. The next prime is 84431717. The reversal of 84431713 is 31713448.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68013009 + 16418704 = 8247^2 + 4052^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84431713 is a prime.

It is a super-2 number, since 2×84431713² = 14257428320228738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84431717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42215856 + 42215857.

It is an arithmetic number, because the mean of its divisors is an integer number (42215857).

Almost surely, 2^84431713 is an apocalyptic number.

It is an amenable number.

84431713 is a deficient number, since it is larger than the sum of its proper divisors (1).

84431713 is an equidigital number, since it uses as much as digits as its factorization.

84431713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 31.

The square root of 84431713 is about 9188.6730815717. The cubic root of 84431713 is about 438.7009082445.

The spelling of 84431713 in words is "eighty-four million, four hundred thirty-one thousand, seven hundred thirteen".