193214989 has 4 divisors (see below), whose sum is σ = 210780000. Its totient is φ = 175649980.

The previous prime is 193214981. The next prime is 193215007. The reversal of 193214989 is 989412391.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 989412391 = 11 ⋅89946581.

It is not a de Polignac number, because 193214989 - 2³ = 193214981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193214981) 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, 8782489 + ... + 8782510.

It is an arithmetic number, because the mean of its divisors is an integer number (52695000).

Almost surely, 2^193214989 is an apocalyptic number.

It is an amenable number.

193214989 is a deficient number, since it is larger than the sum of its proper divisors (17565011).

193214989 is a wasteful number, since it uses less digits than its factorization.

193214989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17565010.

The product of its digits is 139968, while the sum is 46.

The square root of 193214989 is about 13900.1794592732. The cubic root of 193214989 is about 578.1141573189.

It can be divided in two parts, 19321 and 4989, that added together give a triangular number (24310 = T₂₂₀).

The spelling of 193214989 in words is "one hundred ninety-three million, two hundred fourteen thousand, nine hundred eighty-nine".