84539407 has 2 divisors, whose sum is σ = 84539408. Its totient is φ = 84539406.

The previous prime is 84539369. The next prime is 84539423. The reversal of 84539407 is 70493548.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84539407 - 2¹¹ = 84537359 is a prime.

It is a super-2 number, since 2×84539407² = 14293822671823298, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 84539407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84539447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42269703 + 42269704.

It is an arithmetic number, because the mean of its divisors is an integer number (42269704).

Almost surely, 2^84539407 is an apocalyptic number.

84539407 is a deficient number, since it is larger than the sum of its proper divisors (1).

84539407 is an equidigital number, since it uses as much as digits as its factorization.

84539407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 84539407 is about 9194.5313638053. The cubic root of 84539407 is about 438.8873523373.

The spelling of 84539407 in words is "eighty-four million, five hundred thirty-nine thousand, four hundred seven".