123889453 has 2 divisors, whose sum is σ = 123889454. Its totient is φ = 123889452.

The previous prime is 123889417. The next prime is 123889457. The reversal of 123889453 is 354988321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92102409 + 31787044 = 9597^2 + 5638^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123889453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123889457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61944726 + 61944727.

It is an arithmetic number, because the mean of its divisors is an integer number (61944727).

Almost surely, 2^123889453 is an apocalyptic number.

It is an amenable number.

123889453 is a deficient number, since it is larger than the sum of its proper divisors (1).

123889453 is an equidigital number, since it uses as much as digits as its factorization.

123889453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 43.

The square root of 123889453 is about 11130.5639120397. The cubic root of 123889453 is about 498.5148637750.

The spelling of 123889453 in words is "one hundred twenty-three million, eight hundred eighty-nine thousand, four hundred fifty-three".