19970259 has 4 divisors (see below), whose sum is σ = 26627016. Its totient is φ = 13313504.

The previous prime is 19970227. The next prime is 19970267. The reversal of 19970259 is 95207991.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19970259 - 2⁵ = 19970227 is a prime.

It is a super-2 number, since 2×19970259² = 797622489054162, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19970259.

It is not an unprimeable number, because it can be changed into a prime (19970219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3328374 + ... + 3328379.

It is an arithmetic number, because the mean of its divisors is an integer number (6656754).

Almost surely, 2^19970259 is an apocalyptic number.

19970259 is a deficient number, since it is larger than the sum of its proper divisors (6656757).

19970259 is an equidigital number, since it uses as much as digits as its factorization.

19970259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6656756.

The product of its (nonzero) digits is 51030, while the sum is 42.

The square root of 19970259 is about 4468.8095730295. The cubic root of 19970259 is about 271.3071457533.

The spelling of 19970259 in words is "nineteen million, nine hundred seventy thousand, two hundred fifty-nine".