258223949 has 4 divisors (see below), whose sum is σ = 258286464. Its totient is φ = 258161436.

The previous prime is 258223939. The next prime is 258223957. The reversal of 258223949 is 949322852.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-258223949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258223909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24587 + ... + 33480.

It is an arithmetic number, because the mean of its divisors is an integer number (64571616).

Almost surely, 2^258223949 is an apocalyptic number.

It is an amenable number.

258223949 is a deficient number, since it is larger than the sum of its proper divisors (62515).

258223949 is an equidigital number, since it uses as much as digits as its factorization.

258223949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62514.

The product of its digits is 311040, while the sum is 44.

The square root of 258223949 is about 16069.3481199456. The cubic root of 258223949 is about 636.7938192841.

The spelling of 258223949 in words is "two hundred fifty-eight million, two hundred twenty-three thousand, nine hundred forty-nine".