2458991 has 2 divisors, whose sum is σ = 2458992. Its totient is φ = 2458990.

The previous prime is 2458949. The next prime is 2459003. The reversal of 2458991 is 1998542.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2458991 - 2⁶ = 2458927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2458901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1229495 + 1229496.

It is an arithmetic number, because the mean of its divisors is an integer number (1229496).

2^2458991 is an apocalyptic number.

2458991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2458991 is an equidigital number, since it uses as much as digits as its factorization.

2458991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 38.

The square root of 2458991 is about 1568.1170236943. The cubic root of 2458991 is about 134.9746820377.

The spelling of 2458991 in words is "two million, four hundred fifty-eight thousand, nine hundred ninety-one".