226929981 has 8 divisors (see below), whose sum is σ = 303297120. Its totient is φ = 150924752.

The previous prime is 226929973. The next prime is 226930007. The reversal of 226929981 is 189929622.

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 226929981 - 2³ = 226929973 is a prime.

It is a super-2 number, since 2×226929981² = 102994432553320722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 226929981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226929881) 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, 89010 + ... + 91523.

It is an arithmetic number, because the mean of its divisors is an integer number (37912140).

Almost surely, 2^226929981 is an apocalyptic number.

It is an amenable number.

226929981 is a deficient number, since it is larger than the sum of its proper divisors (76367139).

226929981 is a wasteful number, since it uses less digits than its factorization.

226929981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180955.

The product of its digits is 279936, while the sum is 48.

The square root of 226929981 is about 15064.1953319784. The cubic root of 226929981 is about 609.9542929114.

The spelling of 226929981 in words is "two hundred twenty-six million, nine hundred twenty-nine thousand, nine hundred eighty-one".