212793987 has 8 divisors (see below), whose sum is σ = 324257536. Its totient is φ = 121596552.

The previous prime is 212793949. The next prime is 212794009. The reversal of 212793987 is 789397212.

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

It is not a de Polignac number, because 212793987 - 2¹² = 212789891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212793937) 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, 5066503 + ... + 5066544.

It is an arithmetic number, because the mean of its divisors is an integer number (40532192).

Almost surely, 2^212793987 is an apocalyptic number.

212793987 is a deficient number, since it is larger than the sum of its proper divisors (111463549).

212793987 is a wasteful number, since it uses less digits than its factorization.

212793987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10133057.

The product of its digits is 381024, while the sum is 48.

The square root of 212793987 is about 14587.4599228241. The cubic root of 212793987 is about 597.0166601693.

The spelling of 212793987 in words is "two hundred twelve million, seven hundred ninety-three thousand, nine hundred eighty-seven".