12190997 has 8 divisors (see below), whose sum is σ = 15004416. Its totient is φ = 9645552.

The previous prime is 12190979. The next prime is 12190999. The reversal of 12190997 is 79909121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12190997 - 2¹² = 12186901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12190997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12190999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66893 + ... + 67074.

It is an arithmetic number, because the mean of its divisors is an integer number (1875552).

Almost surely, 2^12190997 is an apocalyptic number.

It is an amenable number.

12190997 is a deficient number, since it is larger than the sum of its proper divisors (2813419).

12190997 is a wasteful number, since it uses less digits than its factorization.

12190997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133987.

The product of its (nonzero) digits is 10206, while the sum is 38.

The square root of 12190997 is about 3491.5608257626. The cubic root of 12190997 is about 230.1511105282.

The spelling of 12190997 in words is "twelve million, one hundred ninety thousand, nine hundred ninety-seven".