84906397 has 2 divisors, whose sum is σ = 84906398. Its totient is φ = 84906396.

The previous prime is 84906377. The next prime is 84906413. The reversal of 84906397 is 79360948.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71554681 + 13351716 = 8459^2 + 3654^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84906397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84906377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42453198 + 42453199.

It is an arithmetic number, because the mean of its divisors is an integer number (42453199).

Almost surely, 2^84906397 is an apocalyptic number.

It is an amenable number.

84906397 is a deficient number, since it is larger than the sum of its proper divisors (1).

84906397 is an equidigital number, since it uses as much as digits as its factorization.

84906397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 84906397 is about 9214.4667235820. The cubic root of 84906397 is about 439.5215132509.

The spelling of 84906397 in words is "eighty-four million, nine hundred six thousand, three hundred ninety-seven".