3420394 has 4 divisors (see below), whose sum is σ = 5130594. Its totient is φ = 1710196.

The previous prime is 3420371. The next prime is 3420401. The reversal of 3420394 is 4930243.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3017169 + 403225 = 1737^2 + 635^2 .

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 855097 + ... + 855100.

Almost surely, 2^3420394 is an apocalyptic number.

3420394 is a deficient number, since it is larger than the sum of its proper divisors (1710200).

3420394 is a wasteful number, since it uses less digits than its factorization.

3420394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1710199.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 3420394 is about 1849.4307232227. The cubic root of 3420394 is about 150.6695109582.

It can be divided in two parts, 34 and 20394, that multiplied together give a palindrome (693396).

The spelling of 3420394 in words is "three million, four hundred twenty thousand, three hundred ninety-four".