97826639 has 2 divisors, whose sum is σ = 97826640. Its totient is φ = 97826638.

The previous prime is 97826623. The next prime is 97826683. The reversal of 97826639 is 93662879.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97826639 - 2⁴ = 97826623 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97826689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48913319 + 48913320.

It is an arithmetic number, because the mean of its divisors is an integer number (48913320).

Almost surely, 2^97826639 is an apocalyptic number.

97826639 is a deficient number, since it is larger than the sum of its proper divisors (1).

97826639 is an equidigital number, since it uses as much as digits as its factorization.

97826639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 50.

The square root of 97826639 is about 9890.7350080770. The cubic root of 97826639 is about 460.7716082501.

The spelling of 97826639 in words is "ninety-seven million, eight hundred twenty-six thousand, six hundred thirty-nine".