3494781 has 12 divisors (see below), whose sum is σ = 5267808. Its totient is φ = 2228424.

The previous prime is 3494753. The next prime is 3494789. The reversal of 3494781 is 1874943.

It is a happy number.

It is not a de Polignac number, because 3494781 - 2⁵ = 3494749 is a prime.

It is a super-2 number, since 2×3494781² = 24426988475922, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3494789) 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, 8235 + ... + 8648.

It is an arithmetic number, because the mean of its divisors is an integer number (438984).

Almost surely, 2^3494781 is an apocalyptic number.

It is an amenable number.

3494781 is a deficient number, since it is larger than the sum of its proper divisors (1773027).

3494781 is a wasteful number, since it uses less digits than its factorization.

3494781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16912 (or 16909 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 3494781 is about 1869.4333366023. The cubic root of 3494781 is about 151.7539445863.

The spelling of 3494781 in words is "three million, four hundred ninety-four thousand, seven hundred eighty-one".