3904291 has 8 divisors (see below), whose sum is σ = 4172480. Its totient is φ = 3642408.

The previous prime is 3904289. The next prime is 3904309. The reversal of 3904291 is 1924093.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3904291 - 2¹ = 3904289 is a prime.

It is a Duffinian number.

3904291 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3904261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261 + ... + 2806.

It is an arithmetic number, because the mean of its divisors is an integer number (521560).

Almost surely, 2^3904291 is an apocalyptic number.

3904291 is a deficient number, since it is larger than the sum of its proper divisors (268189).

3904291 is a wasteful number, since it uses less digits than its factorization.

3904291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3153.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 3904291 is about 1975.9278832994. The cubic root of 3904291 is about 157.4637995243.

The spelling of 3904291 in words is "three million, nine hundred four thousand, two hundred ninety-one".