197213499 has 12 divisors (see below), whose sum is σ = 325558896. Its totient is φ = 112693392.

The previous prime is 197213449. The next prime is 197213501. The reversal of 197213499 is 994312791.

It is not a de Polignac number, because 197213499 - 2¹² = 197209403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (197213449) 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, 1565124 + ... + 1565249.

It is an arithmetic number, because the mean of its divisors is an integer number (27129908).

Almost surely, 2^197213499 is an apocalyptic number.

197213499 is a deficient number, since it is larger than the sum of its proper divisors (128345397).

197213499 is a wasteful number, since it uses less digits than its factorization.

197213499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3130386 (or 3130383 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The square root of 197213499 is about 14043.2723750556. The cubic root of 197213499 is about 582.0749097613.

It can be divided in two parts, 19721 and 3499, that added together give a triangular number (23220 = T₂₁₅).

The spelling of 197213499 in words is "one hundred ninety-seven million, two hundred thirteen thousand, four hundred ninety-nine".