84738397 has 2 divisors, whose sum is σ = 84738398. Its totient is φ = 84738396.

The previous prime is 84738389. The next prime is 84738443. The reversal of 84738397 is 79383748.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55264356 + 29474041 = 7434^2 + 5429^2 .

It is a cyclic number.

It is not a de Polignac number, because 84738397 - 2³ = 84738389 is a prime.

It is a super-2 number, since 2×84738397² = 14361191852259218, 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 84738397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84738307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42369198 + 42369199.

It is an arithmetic number, because the mean of its divisors is an integer number (42369199).

Almost surely, 2^84738397 is an apocalyptic number.

It is an amenable number.

84738397 is a deficient number, since it is larger than the sum of its proper divisors (1).

84738397 is an equidigital number, since it uses as much as digits as its factorization.

84738397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 49.

The square root of 84738397 is about 9205.3461097343. The cubic root of 84738397 is about 439.2314355051.

The spelling of 84738397 in words is "eighty-four million, seven hundred thirty-eight thousand, three hundred ninety-seven".