97149309 has 16 divisors (see below), whose sum is σ = 138820992. Its totient is φ = 60274368.

The previous prime is 97149301. The next prime is 97149331. The reversal of 97149309 is 90394179.

It is not a de Polignac number, because 97149309 - 2³ = 97149301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97149301) 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, 16474 + ... + 21579.

It is an arithmetic number, because the mean of its divisors is an integer number (8676312).

Almost surely, 2^97149309 is an apocalyptic number.

It is an amenable number.

97149309 is a deficient number, since it is larger than the sum of its proper divisors (41671683).

97149309 is a wasteful number, since it uses less digits than its factorization.

97149309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38116.

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 97149309 is about 9856.4349031483. The cubic root of 97149309 is about 459.7057175717.

The spelling of 97149309 in words is "ninety-seven million, one hundred forty-nine thousand, three hundred nine".