3213969 has 24 divisors (see below), whose sum is σ = 4980768. Its totient is φ = 1827840.

The previous prime is 3213961. The next prime is 3213979. The reversal of 3213969 is 9693123.

It is not a de Polignac number, because 3213969 - 2³ = 3213961 is a prime.

It is a super-2 number, since 2×3213969² = 20659193465922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3213961) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9369 + ... + 9705.

It is an arithmetic number, because the mean of its divisors is an integer number (207532).

Almost surely, 2^3213969 is an apocalyptic number.

It is an amenable number.

3213969 is a deficient number, since it is larger than the sum of its proper divisors (1766799).

3213969 is a wasteful number, since it uses less digits than its factorization.

3213969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385 (or 368 counting only the distinct ones).

The product of its digits is 8748, while the sum is 33.

The square root of 3213969 is about 1792.7545844315. The cubic root of 3213969 is about 147.5753746713.

The spelling of 3213969 in words is "three million, two hundred thirteen thousand, nine hundred sixty-nine".