2456989 has 2 divisors, whose sum is σ = 2456990. Its totient is φ = 2456988.

The previous prime is 2456983. The next prime is 2456999. The reversal of 2456989 is 9896542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1734489 + 722500 = 1317^2 + 850^2 .

It is a cyclic number.

It is not a de Polignac number, because 2456989 - 2³ = 2456981 is a prime.

It is a super-3 number, since 3×2456989³ = 44497016333624669007, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2456981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1228494 + 1228495.

It is an arithmetic number, because the mean of its divisors is an integer number (1228495).

2^2456989 is an apocalyptic number.

It is an amenable number.

2456989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2456989 is an equidigital number, since it uses as much as digits as its factorization.

2456989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 43.

The square root of 2456989 is about 1567.4785484976. The cubic root of 2456989 is about 134.9380419849.

The spelling of 2456989 in words is "two million, four hundred fifty-six thousand, nine hundred eighty-nine".