212973869 has 8 divisors (see below), whose sum is σ = 225118080. Its totient is φ = 200923200.

The previous prime is 212973853. The next prime is 212973913. The reversal of 212973869 is 968379212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212973869 - 2⁴ = 212973853 is a prime.

It is a super-2 number, since 2×212973869² = 90715737753658322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212973829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18677 + ... + 27834.

It is an arithmetic number, because the mean of its divisors is an integer number (28139760).

Almost surely, 2^212973869 is an apocalyptic number.

It is an amenable number.

212973869 is a deficient number, since it is larger than the sum of its proper divisors (12144211).

212973869 is a wasteful number, since it uses less digits than its factorization.

212973869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46771.

The product of its digits is 326592, while the sum is 47.

The square root of 212973869 is about 14593.6242585589. The cubic root of 212973869 is about 597.1848389569.

The spelling of 212973869 in words is "two hundred twelve million, nine hundred seventy-three thousand, eight hundred sixty-nine".