3216149 has 12 divisors (see below), whose sum is σ = 3474720. Its totient is φ = 2975400.

The previous prime is 3216139. The next prime is 3216197. The reversal of 3216149 is 9416123.

It is not a de Polignac number, because 3216149 - 2⁸ = 3215893 is a prime.

It is a super-2 number, since 2×3216149² = 20687228780402, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3216119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21224 + ... + 21374.

It is an arithmetic number, because the mean of its divisors is an integer number (289560).

Almost surely, 2^3216149 is an apocalyptic number.

It is an amenable number.

3216149 is a deficient number, since it is larger than the sum of its proper divisors (258571).

3216149 is a wasteful number, since it uses less digits than its factorization.

3216149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248 (or 229 counting only the distinct ones).

The product of its digits is 1296, while the sum is 26.

The square root of 3216149 is about 1793.3624842736. The cubic root of 3216149 is about 147.6087333840.

Subtracting from 3216149 its sum of digits (26), we obtain a palindrome (3216123).

The spelling of 3216149 in words is "three million, two hundred sixteen thousand, one hundred forty-nine".