1949879 has 4 divisors (see below), whose sum is σ = 1960176. Its totient is φ = 1939584.

The previous prime is 1949839. The next prime is 1949881. The reversal of 1949879 is 9789491.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1949879 - 2¹⁶ = 1884343 is a prime.

It is a super-2 number, since 2×1949879² = 7604056229282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1949809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4859 + ... + 5244.

It is an arithmetic number, because the mean of its divisors is an integer number (490044).

2^1949879 is an apocalyptic number.

1949879 is a deficient number, since it is larger than the sum of its proper divisors (10297).

1949879 is a wasteful number, since it uses less digits than its factorization.

1949879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10296.

The product of its digits is 163296, while the sum is 47.

The square root of 1949879 is about 1396.3806787549. The cubic root of 1949879 is about 124.9307136023.

It can be divided in two parts, 1949 and 879, that multiplied together give a palindrome (1713171).

The spelling of 1949879 in words is "one million, nine hundred forty-nine thousand, eight hundred seventy-nine".