3919491 has 12 divisors (see below), whose sum is σ = 5959720. Its totient is φ = 2475360.

The previous prime is 3919481. The next prime is 3919501. The reversal of 3919491 is 1949193.

It is an interprime number because it is at equal distance from previous prime (3919481) and next prime (3919501).

It is not a de Polignac number, because 3919491 - 2¹⁵ = 3886723 is a prime.

It is a Duffinian number.

3919491 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3919411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11290 + ... + 11631.

Almost surely, 2^3919491 is an apocalyptic number.

3919491 is a deficient number, since it is larger than the sum of its proper divisors (2040229).

3919491 is a wasteful number, since it uses less digits than its factorization.

3919491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22946 (or 22943 counting only the distinct ones).

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

The square root of 3919491 is about 1979.7704412381. The cubic root of 3919491 is about 157.6678784409.

The spelling of 3919491 in words is "three million, nine hundred nineteen thousand, four hundred ninety-one".