123390393 has 16 divisors (see below), whose sum is σ = 189014016. Its totient is φ = 70137360.

The previous prime is 123390383. The next prime is 123390419. The reversal of 123390393 is 393093321.

It is a happy number.

It is not a de Polignac number, because 123390393 - 2⁹ = 123389881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123390343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11371 + ... + 19392.

It is an arithmetic number, because the mean of its divisors is an integer number (11813376).

Almost surely, 2^123390393 is an apocalyptic number.

It is an amenable number.

123390393 is a deficient number, since it is larger than the sum of its proper divisors (65623623).

123390393 is a wasteful number, since it uses less digits than its factorization.

123390393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30964.

The product of its (nonzero) digits is 13122, while the sum is 33.

The square root of 123390393 is about 11108.1228387158. The cubic root of 123390393 is about 497.8445790057.

The spelling of 123390393 in words is "one hundred twenty-three million, three hundred ninety thousand, three hundred ninety-three".