213949129 has 3 divisors (see below), whose sum is σ = 213963757. Its totient is φ = 213934502.

The previous prime is 213949061. The next prime is 213949187. The reversal of 213949129 is 921949312.

The square root of 213949129 is 14627.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 213949129 - 2¹⁷ = 213818057 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213949091 and 213949100.

It is not an unprimeable number, because it can be changed into a prime (213949829) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 7314 + ... + 21940.

Almost surely, 2^213949129 is an apocalyptic number.

213949129 is the 14627-th square number.

213949129 is the 7314-th centered octagonal number.

It is an amenable number.

213949129 is a deficient number, since it is larger than the sum of its proper divisors (14628).

213949129 is an frugal number, since it uses more digits than its factorization.

213949129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29254 (or 14627 counting only the distinct ones).

The product of its digits is 34992, while the sum is 40.

The cubic root of 213949129 is about 598.0950034182.

The spelling of 213949129 in words is "two hundred thirteen million, nine hundred forty-nine thousand, one hundred twenty-nine".