3429621 has 20 divisors (see below), whose sum is σ = 5519052. Its totient is φ = 2109888.

The previous prime is 3429619. The next prime is 3429653. The reversal of 3429621 is 1269243.

3429621 is a `hidden beast` number, since 34 + 2 + 9 + 621 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1726596 + 1703025 = 1314^2 + 1305^2 .

It is not a de Polignac number, because 3429621 - 2¹ = 3429619 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3429661) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 576 + ... + 2681.

Almost surely, 2^3429621 is an apocalyptic number.

It is an amenable number.

3429621 is a deficient number, since it is larger than the sum of its proper divisors (2089431).

3429621 is a wasteful number, since it uses less digits than its factorization.

3429621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3282 (or 3273 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 3429621 is about 1851.9235945362. The cubic root of 3429621 is about 150.8048734667.

The spelling of 3429621 in words is "three million, four hundred twenty-nine thousand, six hundred twenty-one".