23894389 has 2 divisors, whose sum is σ = 23894390. Its totient is φ = 23894388.

The previous prime is 23894363. The next prime is 23894393. The reversal of 23894389 is 98349832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17222500 + 6671889 = 4150^2 + 2583^2 .

It is a cyclic number.

It is not a de Polignac number, because 23894389 - 2¹⁷ = 23763317 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23894329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11947194 + 11947195.

It is an arithmetic number, because the mean of its divisors is an integer number (11947195).

Almost surely, 2^23894389 is an apocalyptic number.

It is an amenable number.

23894389 is a deficient number, since it is larger than the sum of its proper divisors (1).

23894389 is an equidigital number, since it uses as much as digits as its factorization.

23894389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 46.

The square root of 23894389 is about 4888.1887238526. The cubic root of 23894389 is about 288.0261879800.

The spelling of 23894389 in words is "twenty-three million, eight hundred ninety-four thousand, three hundred eighty-nine".