2149988 has 6 divisors (see below), whose sum is σ = 3762486. Its totient is φ = 1074992.

The previous prime is 2149937. The next prime is 2149991. The reversal of 2149988 is 8899412.

It can be written as a sum of positive squares in only one way, i.e., 2137444 + 12544 = 1462^2 + 112^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 268745 + ... + 268752.

It is an arithmetic number, because the mean of its divisors is an integer number (627081).

2^2149988 is an apocalyptic number.

It is an amenable number.

2149988 is a deficient number, since it is larger than the sum of its proper divisors (1612498).

2149988 is a wasteful number, since it uses less digits than its factorization.

2149988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537501 (or 537499 counting only the distinct ones).

The product of its digits is 41472, while the sum is 41.

The square root of 2149988 is about 1466.2837378898. The cubic root of 2149988 is about 129.0660479436.

It can be divided in two parts, 2149 and 988, that multiplied together give a palindrome (2123212).

The spelling of 2149988 in words is "two million, one hundred forty-nine thousand, nine hundred eighty-eight".