19922097 has 8 divisors (see below), whose sum is σ = 28606144. Its totient is φ = 12259728.

The previous prime is 19922047. The next prime is 19922099. The reversal of 19922097 is 79022991.

It is a happy number.

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

It is not a de Polignac number, because 19922097 - 2⁶ = 19922033 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 510823 = 19922097 / (1 + 9 + 9 + 2 + 2 + 0 + 9 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19922099) 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, 255373 + ... + 255450.

It is an arithmetic number, because the mean of its divisors is an integer number (3575768).

Almost surely, 2^19922097 is an apocalyptic number.

It is an amenable number.

19922097 is a deficient number, since it is larger than the sum of its proper divisors (8684047).

19922097 is a wasteful number, since it uses less digits than its factorization.

19922097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510839.

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 19922097 is about 4463.4176367443. The cubic root of 19922097 is about 271.0888676111.

The spelling of 19922097 in words is "nineteen million, nine hundred twenty-two thousand, ninety-seven".