97979749 has 8 divisors (see below), whose sum is σ = 112509248. Its totient is φ = 83583360.

The previous prime is 97979729. The next prime is 97979771. The reversal of 97979749 is 94797979.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 97979749 - 2⁷ = 97979621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97979729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31692 + ... + 34645.

It is an arithmetic number, because the mean of its divisors is an integer number (14063656).

Almost surely, 2^97979749 is an apocalyptic number.

It is an amenable number.

97979749 is a deficient number, since it is larger than the sum of its proper divisors (14529499).

97979749 is a wasteful number, since it uses less digits than its factorization.

97979749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66555.

The product of its digits is 9001692, while the sum is 61.

The square root of 97979749 is about 9898.4720538071. The cubic root of 97979749 is about 461.0118698939.

The spelling of 97979749 in words is "ninety-seven million, nine hundred seventy-nine thousand, seven hundred forty-nine".