2987399 has 4 divisors (see below), whose sum is σ = 2994264. Its totient is φ = 2980536.

The previous prime is 2987371. The next prime is 2987407. The reversal of 2987399 is 9937892.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2987399 - 2⁸ = 2987143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2987099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2732 + ... + 3665.

It is an arithmetic number, because the mean of its divisors is an integer number (748566).

2^2987399 is an apocalyptic number.

2987399 is a deficient number, since it is larger than the sum of its proper divisors (6865).

2987399 is an equidigital number, since it uses as much as digits as its factorization.

2987399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6864.

The product of its digits is 244944, while the sum is 47.

The square root of 2987399 is about 1728.4093843763. The cubic root of 2987399 is about 144.0227426785.

The spelling of 2987399 in words is "two million, nine hundred eighty-seven thousand, three hundred ninety-nine".