1979634 has 16 divisors (see below), whose sum is σ = 4051872. Its totient is φ = 644448.

The previous prime is 1979617. The next prime is 1979683. The reversal of 1979634 is 4369791.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1979592 and 1979601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3579 + ... + 4094.

It is an arithmetic number, because the mean of its divisors is an integer number (253242).

2^1979634 is an apocalyptic number.

1979634 is an abundant number, since it is smaller than the sum of its proper divisors (2072238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1979634 is a wasteful number, since it uses less digits than its factorization.

1979634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7721.

The product of its digits is 40824, while the sum is 39.

The square root of 1979634 is about 1406.9946694995. The cubic root of 1979634 is about 125.5629859016.

The spelling of 1979634 in words is "one million, nine hundred seventy-nine thousand, six hundred thirty-four".