3851091 has 16 divisors (see below), whose sum is σ = 6006400. Its totient is φ = 2431944.

The previous prime is 3851087. The next prime is 3851101. The reversal of 3851091 is 1901583.

It is not a de Polignac number, because 3851091 - 2² = 3851087 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3851011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3241 + ... + 4266.

It is an arithmetic number, because the mean of its divisors is an integer number (375400).

Almost surely, 2^3851091 is an apocalyptic number.

3851091 is a deficient number, since it is larger than the sum of its proper divisors (2155309).

3851091 is a wasteful number, since it uses less digits than its factorization.

3851091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7535 (or 7529 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 3851091 is about 1962.4196798850. The cubic root of 3851091 is about 156.7453239144.

The spelling of 3851091 in words is "three million, eight hundred fifty-one thousand, ninety-one".