3969090 has 24 divisors (see below), whose sum is σ = 10319868. Its totient is φ = 1058400.

The previous prime is 3969071. The next prime is 3969137. The reversal of 3969090 is 909693.

It can be written as a sum of positive squares in 2 ways, for example, as 3583449 + 385641 = 1893^2 + 621^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21961 + ... + 22140.

Almost surely, 2^3969090 is an apocalyptic number.

3969090 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3969090 is an abundant number, since it is smaller than the sum of its proper divisors (6350778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3969090 is a wasteful number, since it uses less digits than its factorization.

3969090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44114 (or 44111 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 36.

The square root of 3969090 is about 1992.2575134756. The cubic root of 3969090 is about 158.3301593700.

It can be divided in two parts, 39690 and 90, that multiplied together give a square (3572100 = 1890²).

The spelling of 3969090 in words is "three million, nine hundred sixty-nine thousand, ninety".