3521394 has 20 divisors (see below), whose sum is σ = 7890894. Its totient is φ = 1173744.

The previous prime is 3521389. The next prime is 3521417. The reversal of 3521394 is 4931253.

It can be written as a sum of positive squares in only one way, i.e., 3470769 + 50625 = 1863^2 + 225^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 10707 + ... + 11030.

Almost surely, 2^3521394 is an apocalyptic number.

3521394 is an abundant number, since it is smaller than the sum of its proper divisors (4369500).

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

3521394 is a wasteful number, since it uses less digits than its factorization.

3521394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21751 (or 21742 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 3521394 is about 1876.5377694041. The cubic root of 3521394 is about 152.1381765216.

The spelling of 3521394 in words is "three million, five hundred twenty-one thousand, three hundred ninety-four".