1996779 has 8 divisors (see below), whose sum is σ = 2734480. Its totient is φ = 1295136.

The previous prime is 1996777. The next prime is 1996781. The reversal of 1996779 is 9776991.

It is an interprime number because it is at equal distance from previous prime (1996777) and next prime (1996781).

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

It is not a de Polignac number, because 1996779 - 2¹ = 1996777 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1996777) 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, 8884 + ... + 9105.

It is an arithmetic number, because the mean of its divisors is an integer number (341810).

2^1996779 is an apocalyptic number.

1996779 is a deficient number, since it is larger than the sum of its proper divisors (737701).

1996779 is a wasteful number, since it uses less digits than its factorization.

1996779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18029.

The product of its digits is 214326, while the sum is 48.

The square root of 1996779 is about 1413.0743080249. The cubic root of 1996779 is about 125.9244318856.

It can be divided in two parts, 1996 and 779, that added together give a triangular number (2775 = T₇₄).

The spelling of 1996779 in words is "one million, nine hundred ninety-six thousand, seven hundred seventy-nine".