193904 has 10 divisors (see below), whose sum is σ = 375720. Its totient is φ = 96944.

The previous prime is 193891. The next prime is 193937. The reversal of 193904 is 409391.

It is a happy number.

It is a super-2 number, since 2×193904² = 75197522432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

193904 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6044 + ... + 6075.

It is an arithmetic number, because the mean of its divisors is an integer number (37572).

2¹⁹³⁹⁰⁴ is an apocalyptic number.

It is an amenable number.

193904 is a deficient number, since it is larger than the sum of its proper divisors (181816).

193904 is a wasteful number, since it uses less digits than its factorization.

193904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12127 (or 12121 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 193904 is about 440.3453190395. The cubic root of 193904 is about 57.8800533445.

The spelling of 193904 in words is "one hundred ninety-three thousand, nine hundred four".