272399987 has 4 divisors (see below), whose sum is σ = 281793120. Its totient is φ = 263006856.

The previous prime is 272399951. The next prime is 272399989. The reversal of 272399987 is 789993272.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 272399987 - 2⁸ = 272399731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (272399989) 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, 4696523 + ... + 4696580.

It is an arithmetic number, because the mean of its divisors is an integer number (70448280).

Almost surely, 2^272399987 is an apocalyptic number.

272399987 is a deficient number, since it is larger than the sum of its proper divisors (9393133).

272399987 is an equidigital number, since it uses as much as digits as its factorization.

272399987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9393132.

The product of its digits is 3429216, while the sum is 56.

The square root of 272399987 is about 16504.5444347913. The cubic root of 272399987 is about 648.2398033798.

The spelling of 272399987 in words is "two hundred seventy-two million, three hundred ninety-nine thousand, nine hundred eighty-seven".