72333749 has 2 divisors, whose sum is σ = 72333750. Its totient is φ = 72333748.

The previous prime is 72333731. The next prime is 72333787. The reversal of 72333749 is 94733327.

It is a happy number.

It is an a-pointer prime, because the next prime (72333787) can be obtained adding 72333749 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36990724 + 35343025 = 6082^2 + 5945^2 .

It is a cyclic number.

It is not a de Polignac number, because 72333749 - 2⁸ = 72333493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72333719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36166874 + 36166875.

It is an arithmetic number, because the mean of its divisors is an integer number (36166875).

Almost surely, 2^72333749 is an apocalyptic number.

It is an amenable number.

72333749 is a deficient number, since it is larger than the sum of its proper divisors (1).

72333749 is an equidigital number, since it uses as much as digits as its factorization.

72333749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 95256, while the sum is 38.

The square root of 72333749 is about 8504.9249849719. The cubic root of 72333749 is about 416.6585757007.

The spelling of 72333749 in words is "seventy-two million, three hundred thirty-three thousand, seven hundred forty-nine".