97749169 has 32 divisors (see below), whose sum is σ = 122112000. Its totient is φ = 78039360.

The previous prime is 97749137. The next prime is 97749199. The reversal of 97749169 is 96194779.

It is not a de Polignac number, because 97749169 - 2⁵ = 97749137 is a prime.

It is a super-2 number, since 2×97749169² = 19109800080381122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97749199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 308199 + ... + 308515.

It is an arithmetic number, because the mean of its divisors is an integer number (3816000).

Almost surely, 2^97749169 is an apocalyptic number.

It is an amenable number.

97749169 is a deficient number, since it is larger than the sum of its proper divisors (24362831).

97749169 is a wasteful number, since it uses less digits than its factorization.

97749169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398 (or 384 counting only the distinct ones).

The product of its digits is 857304, while the sum is 52.

The square root of 97749169 is about 9886.8179410769. The cubic root of 97749169 is about 460.6499460809.

The spelling of 97749169 in words is "ninety-seven million, seven hundred forty-nine thousand, one hundred sixty-nine".