1949679 has 12 divisors (see below), whose sum is σ = 2982096. Its totient is φ = 1223232.

The previous prime is 1949657. The next prime is 1949707. The reversal of 1949679 is 9769491.

It is a de Polignac number, because none of the positive numbers 2^k-1949679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1949639) 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, 6219 + ... + 6524.

It is an arithmetic number, because the mean of its divisors is an integer number (248508).

2^1949679 is an apocalyptic number.

1949679 is a deficient number, since it is larger than the sum of its proper divisors (1032417).

1949679 is a wasteful number, since it uses less digits than its factorization.

1949679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12766 (or 12763 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The square root of 1949679 is about 1396.3090632091. The cubic root of 1949679 is about 124.9264420557.

It can be divided in two parts, 1949 and 679, that added together give a triangular number (2628 = T₇₂).

The spelling of 1949679 in words is "one million, nine hundred forty-nine thousand, six hundred seventy-nine".