2489797 has 2 divisors, whose sum is σ = 2489798. Its totient is φ = 2489796.

The previous prime is 2489789. The next prime is 2489801. The reversal of 2489797 is 7979842.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2477476 + 12321 = 1574^2 + 111^2 .

It is a cyclic number.

It is not a de Polignac number, because 2489797 - 2³ = 2489789 is a prime.

It is a pancake number, because a pancake can be divided into 2489797 parts by 2231 straight cuts.

2489797 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2489717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1244898 + 1244899.

It is an arithmetic number, because the mean of its divisors is an integer number (1244899).

2^2489797 is an apocalyptic number.

It is an amenable number.

2489797 is a deficient number, since it is larger than the sum of its proper divisors (1).

2489797 is an equidigital number, since it uses as much as digits as its factorization.

2489797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 46.

The square root of 2489797 is about 1577.9090594835. The cubic root of 2489797 is about 135.5359943954.

The spelling of 2489797 in words is "two million, four hundred eighty-nine thousand, seven hundred ninety-seven".