1379979 has 12 divisors (see below), whose sum is σ = 2013336. Its totient is φ = 910752.

The previous prime is 1379969. The next prime is 1379981. The reversal of 1379979 is 9799731.

It is not a de Polignac number, because 1379979 - 2⁵ = 1379947 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1379929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 247 + ... + 1679.

It is an arithmetic number, because the mean of its divisors is an integer number (167778).

2^1379979 is an apocalyptic number.

1379979 is a deficient number, since it is larger than the sum of its proper divisors (633357).

1379979 is a wasteful number, since it uses less digits than its factorization.

1379979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546 (or 1543 counting only the distinct ones).

The product of its digits is 107163, while the sum is 45.

The square root of 1379979 is about 1174.7250742195. The cubic root of 1379979 is about 111.3330634134. Note that the first 3 decimals are identical.

The spelling of 1379979 in words is "one million, three hundred seventy-nine thousand, nine hundred seventy-nine".