84393553 has 2 divisors, whose sum is σ = 84393554. Its totient is φ = 84393552.

The previous prime is 84393521. The next prime is 84393557. The reversal of 84393553 is 35539348.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43138624 + 41254929 = 6568^2 + 6423^2 .

It is a cyclic number.

It is not a de Polignac number, because 84393553 - 2⁵ = 84393521 is a prime.

It is not a weakly prime, because it can be changed into another prime (84393557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42196776 + 42196777.

It is an arithmetic number, because the mean of its divisors is an integer number (42196777).

Almost surely, 2^84393553 is an apocalyptic number.

It is an amenable number.

84393553 is a deficient number, since it is larger than the sum of its proper divisors (1).

84393553 is an equidigital number, since it uses as much as digits as its factorization.

84393553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 40.

The square root of 84393553 is about 9186.5963773315. The cubic root of 84393553 is about 438.6348061099.

The spelling of 84393553 in words is "eighty-four million, three hundred ninety-three thousand, five hundred fifty-three".