3489981 has 16 divisors (see below), whose sum is σ = 5375808. Its totient is φ = 1990400.

The previous prime is 3489973. The next prime is 3490021. The reversal of 3489981 is 1899843.

3489981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 3489981 - 2³ = 3489973 is a prime.

It is a super-2 number, since 2×3489981² = 24359934760722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3489931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2550 + ... + 3671.

It is an arithmetic number, because the mean of its divisors is an integer number (335988).

Almost surely, 2^3489981 is an apocalyptic number.

It is an amenable number.

3489981 is a deficient number, since it is larger than the sum of its proper divisors (1885827).

3489981 is a wasteful number, since it uses less digits than its factorization.

3489981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6252.

The product of its digits is 62208, while the sum is 42.

The square root of 3489981 is about 1868.1490839866. The cubic root of 3489981 is about 151.6844359221.

It can be divided in two parts, 34899 and 81, that added together give a triangular number (34980 = T₂₆₄).

The spelling of 3489981 in words is "three million, four hundred eighty-nine thousand, nine hundred eighty-one".