97899609 has 16 divisors (see below), whose sum is σ = 137646080. Its totient is φ = 61722000.

The previous prime is 97899589. The next prime is 97899611. The reversal of 97899609 is 90699879.

It is not a de Polignac number, because 97899609 - 2¹² = 97895513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97899629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41664 + ... + 43950.

It is an arithmetic number, because the mean of its divisors is an integer number (8602880).

Almost surely, 2^97899609 is an apocalyptic number.

It is an amenable number.

97899609 is a deficient number, since it is larger than the sum of its proper divisors (39746471).

97899609 is a wasteful number, since it uses less digits than its factorization.

97899609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3060.

The product of its (nonzero) digits is 2204496, while the sum is 57.

The square root of 97899609 is about 9894.4231261858. The cubic root of 97899609 is about 460.8861447004.

The spelling of 97899609 in words is "ninety-seven million, eight hundred ninety-nine thousand, six hundred nine".