3805407 has 16 divisors (see below), whose sum is σ = 5699680. Its totient is φ = 2509056.

The previous prime is 3805393. The next prime is 3805463. The reversal of 3805407 is 7045083.

It is not a de Polignac number, because 3805407 - 2⁴ = 3805391 is a prime.

It is a super-2 number, since 2×3805407² = 28962244871298, which contains 22 as substring.

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

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3815407) 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, 1893 + ... + 3345.

It is an arithmetic number, because the mean of its divisors is an integer number (356230).

Almost surely, 2^3805407 is an apocalyptic number.

3805407 is a deficient number, since it is larger than the sum of its proper divisors (1894273).

3805407 is a wasteful number, since it uses less digits than its factorization.

3805407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1559 (or 1553 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 3805407 is about 1950.7452422087. The cubic root of 3805407 is about 156.1230537964.

The spelling of 3805407 in words is "three million, eight hundred five thousand, four hundred seven".