97426729 has 2 divisors, whose sum is σ = 97426730. Its totient is φ = 97426728.

The previous prime is 97426727. The next prime is 97426801. The reversal of 97426729 is 92762479.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94536729 + 2890000 = 9723^2 + 1700^2 .

It is an emirp because it is prime and its reverse (92762479) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97426729 - 2¹ = 97426727 is a prime.

Together with 97426727, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (97426727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48713364 + 48713365.

It is an arithmetic number, because the mean of its divisors is an integer number (48713365).

Almost surely, 2^97426729 is an apocalyptic number.

It is an amenable number.

97426729 is a deficient number, since it is larger than the sum of its proper divisors (1).

97426729 is an equidigital number, since it uses as much as digits as its factorization.

97426729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 46.

The square root of 97426729 is about 9870.4979104400. The cubic root of 97426729 is about 460.1428809459.

It can be divided in two parts, 9742 and 6729, that added together give a triangular number (16471 = T₁₈₁).

The spelling of 97426729 in words is "ninety-seven million, four hundred twenty-six thousand, seven hundred twenty-nine".