19914489 has 48 divisors (see below), whose sum is σ = 35143680. Its totient is φ = 10614240.

The previous prime is 19914467. The next prime is 19914491. The reversal of 19914489 is 98441991.

It is not a de Polignac number, because 19914489 - 2⁹ = 19913977 is a prime.

It is a super-2 number, since 2×19914489² = 793173744262242, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19914449) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 151954 + ... + 152084.

It is an arithmetic number, because the mean of its divisors is an integer number (732160).

Almost surely, 2^19914489 is an apocalyptic number.

19914489 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

19914489 is a deficient number, since it is larger than the sum of its proper divisors (15229191).

19914489 is a wasteful number, since it uses less digits than its factorization.

19914489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290 (or 287 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 19914489 is about 4462.5652936400. The cubic root of 19914489 is about 271.0543547332.

The spelling of 19914489 in words is "nineteen million, nine hundred fourteen thousand, four hundred eighty-nine".