3400981 has 6 divisors (see below), whose sum is σ = 3589782. Its totient is φ = 3221640.

The previous prime is 3400963. The next prime is 3400993. The reversal of 3400981 is 1890043.

It can be written as a sum of positive squares in only one way, i.e., 2669956 + 731025 = 1634^2 + 855^2 .

It is not a de Polignac number, because 3400981 - 2⁵ = 3400949 is a prime.

It is a super-2 number, since 2×3400981² = 23133343524722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3400931) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4350 + ... + 5071.

It is an arithmetic number, because the mean of its divisors is an integer number (598297).

Almost surely, 2^3400981 is an apocalyptic number.

It is an amenable number.

3400981 is a deficient number, since it is larger than the sum of its proper divisors (188801).

3400981 is an equidigital number, since it uses as much as digits as its factorization.

3400981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9459 (or 9440 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 3400981 is about 1844.1748832472. The cubic root of 3400981 is about 150.3839202337.

The spelling of 3400981 in words is "three million, four hundred thousand, nine hundred eighty-one".