97809850 has 24 divisors (see below), whose sum is σ = 182703708. Its totient is φ = 38956800.

The previous prime is 97809839. The next prime is 97809851. The reversal of 97809850 is 5890879.

It can be written as a sum of positive squares in 6 ways, for example, as 70341769 + 27468081 = 8387^2 + 5241^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 97809850.

It is not an unprimeable number, because it can be changed into a prime (97809851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7992 + ... + 16108.

Almost surely, 2^97809850 is an apocalyptic number.

97809850 is a deficient number, since it is larger than the sum of its proper divisors (84893858).

97809850 is a wasteful number, since it uses less digits than its factorization.

97809850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8370 (or 8365 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 46.

The square root of 97809850 is about 9889.8862480819. The cubic root of 97809850 is about 460.7452475465.

The spelling of 97809850 in words is "ninety-seven million, eight hundred nine thousand, eight hundred fifty".