258215449 has 8 divisors (see below), whose sum is σ = 267336000. Its totient is φ = 249109392.

The previous prime is 258215437. The next prime is 258215471. The reversal of 258215449 is 944512852.

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 258215449 - 2²⁷ = 123997721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258215479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42972 + ... + 48610.

It is an arithmetic number, because the mean of its divisors is an integer number (33417000).

Almost surely, 2^258215449 is an apocalyptic number.

258215449 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

258215449 is a deficient number, since it is larger than the sum of its proper divisors (9120551).

258215449 is a wasteful number, since it uses less digits than its factorization.

258215449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7247.

The product of its digits is 115200, while the sum is 40.

The square root of 258215449 is about 16069.0836390878. The cubic root of 258215449 is about 636.7868320586.

The spelling of 258215449 in words is "two hundred fifty-eight million, two hundred fifteen thousand, four hundred forty-nine".