3400947 has 30 divisors (see below), whose sum is σ = 5600364. Its totient is φ = 2055240.

The previous prime is 3400931. The next prime is 3400949. The reversal of 3400947 is 7490043.

It is not a de Polignac number, because 3400947 - 2⁴ = 3400931 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 3400947.

It is not an unprimeable number, because it can be changed into a prime (3400949) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 9628 + ... + 9974.

Almost surely, 2^3400947 is an apocalyptic number.

3400947 is a deficient number, since it is larger than the sum of its proper divisors (2199417).

3400947 is a wasteful number, since it uses less digits than its factorization.

3400947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 3400947 is about 1844.1656650095. The cubic root of 3400947 is about 150.3834190969.

The spelling of 3400947 in words is "three million, four hundred thousand, nine hundred forty-seven".