97723829 has 4 divisors (see below), whose sum is σ = 111684384. Its totient is φ = 83763276.

The previous prime is 97723817. The next prime is 97723831. The reversal of 97723829 is 92832779.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92832779 = 13 ⋅7140983.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97723829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97723889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6980267 + ... + 6980280.

It is an arithmetic number, because the mean of its divisors is an integer number (27921096).

Almost surely, 2^97723829 is an apocalyptic number.

It is an amenable number.

97723829 is a deficient number, since it is larger than the sum of its proper divisors (13960555).

97723829 is a wasteful number, since it uses less digits than its factorization.

97723829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13960554.

The product of its digits is 381024, while the sum is 47.

The square root of 97723829 is about 9885.5363536836. The cubic root of 97723829 is about 460.6101371203.

The spelling of 97723829 in words is "ninety-seven million, seven hundred twenty-three thousand, eight hundred twenty-nine".