3494021 has 4 divisors (see below), whose sum is σ = 3588492. Its totient is φ = 3399552.

The previous prime is 3494017. The next prime is 3494033. The reversal of 3494021 is 1204943.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1204943 = 17 ⋅70879.

It can be written as a sum of positive squares in 2 ways, for example, as 2217121 + 1276900 = 1489^2 + 1130^2 .

It is a cyclic number.

It is not a de Polignac number, because 3494021 - 2² = 3494017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3494011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47180 + ... + 47253.

It is an arithmetic number, because the mean of its divisors is an integer number (897123).

Almost surely, 2^3494021 is an apocalyptic number.

It is an amenable number.

3494021 is a deficient number, since it is larger than the sum of its proper divisors (94471).

3494021 is an equidigital number, since it uses as much as digits as its factorization.

3494021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94470.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 3494021 is about 1869.2300553971. The cubic root of 3494021 is about 151.7429432905.

Adding to 3494021 its reverse (1204943), we get a palindrome (4698964).

The spelling of 3494021 in words is "three million, four hundred ninety-four thousand, twenty-one".