1979427 has 8 divisors (see below), whose sum is σ = 2646016. Its totient is φ = 1316232.

The previous prime is 1979413. The next prime is 1979437. The reversal of 1979427 is 7249791.

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

It is not a de Polignac number, because 1979427 - 2⁸ = 1979171 is a prime.

It is a Duffinian number.

1979427 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1979437) 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, 1278 + ... + 2364.

It is an arithmetic number, because the mean of its divisors is an integer number (330752).

2^1979427 is an apocalyptic number.

1979427 is a deficient number, since it is larger than the sum of its proper divisors (666589).

1979427 is a wasteful number, since it uses less digits than its factorization.

1979427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697.

The product of its digits is 31752, while the sum is 39.

The square root of 1979427 is about 1406.9211065301. The cubic root of 1979427 is about 125.5586092603.

The spelling of 1979427 in words is "one million, nine hundred seventy-nine thousand, four hundred twenty-seven".