97979949 has 10 divisors (see below), whose sum is σ = 146365230. Its totient is φ = 65319912.

The previous prime is 97979909. The next prime is 97979963. The reversal of 97979949 is 94997979.

It can be written as a sum of positive squares in only one way, i.e., 65318724 + 32661225 = 8082^2 + 5715^2 .

It is not a de Polignac number, because 97979949 - 2⁷ = 97979821 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97979909) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 604734 + ... + 604895.

It is an arithmetic number, because the mean of its divisors is an integer number (14636523).

Almost surely, 2^97979949 is an apocalyptic number.

It is an amenable number.

97979949 is a deficient number, since it is larger than the sum of its proper divisors (48385281).

97979949 is a wasteful number, since it uses less digits than its factorization.

97979949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209641 (or 1209632 counting only the distinct ones).

The product of its digits is 11573604, while the sum is 63.

The square root of 97979949 is about 9898.4821563712. The cubic root of 97979949 is about 461.0121835720.

The spelling of 97979949 in words is "ninety-seven million, nine hundred seventy-nine thousand, nine hundred forty-nine".