7273999 has 2 divisors, whose sum is σ = 7274000. Its totient is φ = 7273998.

The previous prime is 7273997. The next prime is 7274053. The reversal of 7273999 is 9993727.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7273999 - 2¹ = 7273997 is a prime.

It is a super-2 number, since 2×7273999² = 105822122904002, which contains 22 as substring.

Together with 7273997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7273991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3636999 + 3637000.

It is an arithmetic number, because the mean of its divisors is an integer number (3637000).

Almost surely, 2^7273999 is an apocalyptic number.

7273999 is a deficient number, since it is larger than the sum of its proper divisors (1).

7273999 is an equidigital number, since it uses as much as digits as its factorization.

7273999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 214326, while the sum is 46.

The square root of 7273999 is about 2697.0352240933. The cubic root of 7273999 is about 193.7571535340.

The spelling of 7273999 in words is "seven million, two hundred seventy-three thousand, nine hundred ninety-nine".