213479847 has 16 divisors (see below), whose sum is σ = 361447680. Its totient is φ = 121988376.

The previous prime is 213479843. The next prime is 213479867. The reversal of 213479847 is 748974312.

It is not a de Polignac number, because 213479847 - 2² = 213479843 is a prime.

It is a super-3 number, since 3×213479847³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213479843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 564573 + ... + 564950.

It is an arithmetic number, because the mean of its divisors is an integer number (22590480).

Almost surely, 2^213479847 is an apocalyptic number.

213479847 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

213479847 is a deficient number, since it is larger than the sum of its proper divisors (147967833).

213479847 is a wasteful number, since it uses less digits than its factorization.

213479847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129539 (or 1129533 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 213479847 is about 14610.9495584647. The cubic root of 213479847 is about 597.6573905384.

The spelling of 213479847 in words is "two hundred thirteen million, four hundred seventy-nine thousand, eight hundred forty-seven".