2891249 has 6 divisors (see below), whose sum is σ = 3051810. Its totient is φ = 2738736.

The previous prime is 2891243. The next prime is 2891257. The reversal of 2891249 is 9421982.

It can be written as a sum of positive squares in only one way, i.e., 2608225 + 283024 = 1615^2 + 532^2 .

It is not a de Polignac number, because 2891249 - 2⁴ = 2891233 is a prime.

It is a super-3 number, since 3×2891249³ = 72506633537571333747, which contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2891243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3644 + ... + 4365.

It is an arithmetic number, because the mean of its divisors is an integer number (508635).

2^2891249 is an apocalyptic number.

It is an amenable number.

2891249 is a deficient number, since it is larger than the sum of its proper divisors (160561).

2891249 is an equidigital number, since it uses as much as digits as its factorization.

2891249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8047 (or 8028 counting only the distinct ones).

The product of its digits is 10368, while the sum is 35.

The square root of 2891249 is about 1700.3673132591. The cubic root of 2891249 is about 142.4607299197.

The spelling of 2891249 in words is "two million, eight hundred ninety-one thousand, two hundred forty-nine".