258949947 has 8 divisors (see below), whose sum is σ = 345411856. Its totient is φ = 172560672.

The previous prime is 258949937. The next prime is 258949979. The reversal of 258949947 is 749949852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 258949947 - 2¹⁵ = 258917179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258949937) 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, 9208 + ... + 24549.

It is an arithmetic number, because the mean of its divisors is an integer number (43176482).

Almost surely, 2^258949947 is an apocalyptic number.

258949947 is a deficient number, since it is larger than the sum of its proper divisors (86461909).

258949947 is a wasteful number, since it uses less digits than its factorization.

258949947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36317.

The product of its digits is 6531840, while the sum is 57.

The square root of 258949947 is about 16091.9217932477. The cubic root of 258949947 is about 637.3900439347.

The spelling of 258949947 in words is "two hundred fifty-eight million, nine hundred forty-nine thousand, nine hundred forty-seven".