1949907 has 4 divisors (see below), whose sum is σ = 2599880. Its totient is φ = 1299936.

The previous prime is 1949887. The next prime is 1949911. The reversal of 1949907 is 7099491.

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

It is not a de Polignac number, because 1949907 - 2¹⁰ = 1948883 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1949947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324982 + ... + 324987.

It is an arithmetic number, because the mean of its divisors is an integer number (649970).

2^1949907 is an apocalyptic number.

1949907 is a deficient number, since it is larger than the sum of its proper divisors (649973).

1949907 is an equidigital number, since it uses as much as digits as its factorization.

1949907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649972.

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 1949907 is about 1396.3907046382. The cubic root of 1949907 is about 124.9313115955.

It can be divided in two parts, 194 and 9907, that added together give a palindrome (10101).

The spelling of 1949907 in words is "one million, nine hundred forty-nine thousand, nine hundred seven".