7272909887 has 2 divisors, whose sum is σ = 7272909888. Its totient is φ = 7272909886.

The previous prime is 7272909883. The next prime is 7272909923. The reversal of 7272909887 is 7889092727.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7272909887 - 2² = 7272909883 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7272909883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3636454943 + 3636454944.

It is an arithmetic number, because the mean of its divisors is an integer number (3636454944).

Almost surely, 2^7272909887 is an apocalyptic number.

7272909887 is a deficient number, since it is larger than the sum of its proper divisors (1).

7272909887 is an equidigital number, since it uses as much as digits as its factorization.

7272909887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7112448, while the sum is 59.

The square root of 7272909887 is about 85281.3572066017. The cubic root of 7272909887 is about 1937.4748283487.

The spelling of 7272909887 in words is "seven billion, two hundred seventy-two million, nine hundred nine thousand, eight hundred eighty-seven".