1979121 has 8 divisors (see below), whose sum is σ = 2646784. Its totient is φ = 1315440.

The previous prime is 1979119. The next prime is 1979129. The reversal of 1979121 is 1219791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1979121 - 2¹ = 1979119 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1979129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 480 + ... + 2046.

It is an arithmetic number, because the mean of its divisors is an integer number (330848).

2^1979121 is an apocalyptic number.

It is an amenable number.

1979121 is a deficient number, since it is larger than the sum of its proper divisors (667663).

1979121 is a wasteful number, since it uses less digits than its factorization.

1979121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991.

The product of its digits is 1134, while the sum is 30.

The square root of 1979121 is about 1406.8123542250. The cubic root of 1979121 is about 125.5521388837.

The spelling of 1979121 in words is "one million, nine hundred seventy-nine thousand, one hundred twenty-one".