1949391 has 12 divisors (see below), whose sum is σ = 2834832. Its totient is φ = 1290816.

The previous prime is 1949383. The next prime is 1949417. The reversal of 1949391 is 1939491.

It is not a de Polignac number, because 1949391 - 2³ = 1949383 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1949341) 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, 855 + ... + 2151.

It is an arithmetic number, because the mean of its divisors is an integer number (236236).

2^1949391 is an apocalyptic number.

1949391 is a deficient number, since it is larger than the sum of its proper divisors (885441).

1949391 is a wasteful number, since it uses less digits than its factorization.

1949391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1470 (or 1467 counting only the distinct ones).

The product of its digits is 8748, while the sum is 36.

The square root of 1949391 is about 1396.2059303699. The cubic root of 1949391 is about 124.9202905153.

The spelling of 1949391 in words is "one million, nine hundred forty-nine thousand, three hundred ninety-one".