73449731 has 2 divisors, whose sum is σ = 73449732. Its totient is φ = 73449730.

The previous prime is 73449703. The next prime is 73449743. The reversal of 73449731 is 13794437.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73449731 - 2⁶ = 73449667 is a prime.

It is a super-2 number, since 2×73449731² = 10789725967944722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (73449751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36724865 + 36724866.

It is an arithmetic number, because the mean of its divisors is an integer number (36724866).

Almost surely, 2^73449731 is an apocalyptic number.

73449731 is a deficient number, since it is larger than the sum of its proper divisors (1).

73449731 is an equidigital number, since it uses as much as digits as its factorization.

73449731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 38.

The square root of 73449731 is about 8570.2818506745. The cubic root of 73449731 is about 418.7904181377.

The spelling of 73449731 in words is "seventy-three million, four hundred forty-nine thousand, seven hundred thirty-one".