3404781 has 16 divisors (see below), whose sum is σ = 5310400. Its totient is φ = 2150064.

The previous prime is 3404771. The next prime is 3404801. The reversal of 3404781 is 1874043.

It is not a de Polignac number, because 3404781 - 2¹¹ = 3402733 is a prime.

It is a super-2 number, since 2×3404781² = 23185067315922, which contains 22 as substring.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3404741) 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, 2806 + ... + 3831.

It is an arithmetic number, because the mean of its divisors is an integer number (331900).

Almost surely, 2^3404781 is an apocalyptic number.

It is an amenable number.

3404781 is a deficient number, since it is larger than the sum of its proper divisors (1905619).

3404781 is a wasteful number, since it uses less digits than its factorization.

3404781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6665 (or 6659 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 3404781 is about 1845.2048666747. The cubic root of 3404781 is about 150.4399086082.

The spelling of 3404781 in words is "three million, four hundred four thousand, seven hundred eighty-one".