1984949 has 4 divisors (see below), whose sum is σ = 2089440. Its totient is φ = 1880460.

The previous prime is 1984921. The next prime is 1984979. The reversal of 1984949 is 9494891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1984949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1984979) 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, 52217 + ... + 52254.

It is an arithmetic number, because the mean of its divisors is an integer number (522360).

2^1984949 is an apocalyptic number.

1984949 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1984949 is a deficient number, since it is larger than the sum of its proper divisors (104491).

1984949 is a wasteful number, since it uses less digits than its factorization.

1984949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104490.

The product of its digits is 93312, while the sum is 44.

The square root of 1984949 is about 1408.8821810215. The cubic root of 1984949 is about 125.6752576484.

The spelling of 1984949 in words is "one million, nine hundred eighty-four thousand, nine hundred forty-nine".