3521398 has 4 divisors (see below), whose sum is σ = 5282100. Its totient is φ = 1760698.

The previous prime is 3521389. The next prime is 3521417. The reversal of 3521398 is 8931253.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8931253 = 353 ⋅25301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 880348 + ... + 880351.

It is an arithmetic number, because the mean of its divisors is an integer number (1320525).

Almost surely, 2^3521398 is an apocalyptic number.

3521398 is a deficient number, since it is larger than the sum of its proper divisors (1760702).

3521398 is a wasteful number, since it uses less digits than its factorization.

3521398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760701.

The product of its digits is 6480, while the sum is 31.

The square root of 3521398 is about 1876.5388351963. The cubic root of 3521398 is about 152.1382341269.

The spelling of 3521398 in words is "three million, five hundred twenty-one thousand, three hundred ninety-eight".