3405447 has 12 divisors (see below), whose sum is σ = 5000424. Its totient is φ = 2232720.

The previous prime is 3405431. The next prime is 3405463. The reversal of 3405447 is 7445043.

It is an interprime number because it is at equal distance from previous prime (3405431) and next prime (3405463).

It is not a de Polignac number, because 3405447 - 2⁴ = 3405431 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3405447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3405247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2553 + ... + 3650.

It is an arithmetic number, because the mean of its divisors is an integer number (416702).

Almost surely, 2^3405447 is an apocalyptic number.

3405447 is a deficient number, since it is larger than the sum of its proper divisors (1594977).

3405447 is a wasteful number, since it uses less digits than its factorization.

3405447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6270 (or 6267 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 3405447 is about 1845.3853256163. The cubic root of 3405447 is about 150.4497170166.

It can be divided in two parts, 3 and 405447, that added together give a triangular number (405450 = T₉₀₀).

The spelling of 3405447 in words is "three million, four hundred five thousand, four hundred forty-seven".