214947639 has 6 divisors (see below), whose sum is σ = 310479936. Its totient is φ = 143298420.

The previous prime is 214947637. The next prime is 214947641. The reversal of 214947639 is 936749412.

It is a happy number.

214947639 is a `hidden beast` number, since 2 + 1 + 4 + 9 + 4 + 7 + 639 = 666.

It is an interprime number because it is at equal distance from previous prime (214947637) and next prime (214947641).

It is not a de Polignac number, because 214947639 - 2¹ = 214947637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 214947594 and 214947603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214947637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11941527 + ... + 11941544.

It is an arithmetic number, because the mean of its divisors is an integer number (51746656).

Almost surely, 2^214947639 is an apocalyptic number.

214947639 is a deficient number, since it is larger than the sum of its proper divisors (95532297).

214947639 is a wasteful number, since it uses less digits than its factorization.

214947639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23883077 (or 23883074 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 214947639 is about 14661.0926946118. The cubic root of 214947639 is about 599.0240049168.

The spelling of 214947639 in words is "two hundred fourteen million, nine hundred forty-seven thousand, six hundred thirty-nine".