3400891 has 8 divisors (see below), whose sum is σ = 3692304. Its totient is φ = 3113760.

The previous prime is 3400883. The next prime is 3400897. The reversal of 3400891 is 1980043.

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

It is not a de Polignac number, because 3400891 - 2³ = 3400883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3400897) 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, 705 + ... + 2701.

It is an arithmetic number, because the mean of its divisors is an integer number (461538).

Almost surely, 2^3400891 is an apocalyptic number.

3400891 is a deficient number, since it is larger than the sum of its proper divisors (291413).

3400891 is a wasteful number, since it uses less digits than its factorization.

With its successor (3400892) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (2141).

3400891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2141.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 3400891 is about 1844.1504819293. The cubic root of 3400891 is about 150.3825936878.

The spelling of 3400891 in words is "three million, four hundred thousand, eight hundred ninety-one".