3969550 has 48 divisors (see below), whose sum is σ = 8249472. Its totient is φ = 1411200.

The previous prime is 3969529. The next prime is 3969557. The reversal of 3969550 is 559693.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3969557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20052 + ... + 20248.

It is an arithmetic number, because the mean of its divisors is an integer number (171864).

Almost surely, 2^3969550 is an apocalyptic number.

3969550 is an abundant number, since it is smaller than the sum of its proper divisors (4279922).

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

3969550 is a wasteful number, since it uses less digits than its factorization.

3969550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 36450, while the sum is 37.

The square root of 3969550 is about 1992.3729570540. The cubic root of 3969550 is about 158.3362757225.

The spelling of 3969550 in words is "three million, nine hundred sixty-nine thousand, five hundred fifty".