73729987 has 2 divisors, whose sum is σ = 73729988. Its totient is φ = 73729986.

The previous prime is 73729961. The next prime is 73730017. The reversal of 73729987 is 78992737.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73729987 is a prime.

It is a super-2 number, since 2×73729987² = 10872221966040338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (73729087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36864993 + 36864994.

It is an arithmetic number, because the mean of its divisors is an integer number (36864994).

Almost surely, 2^73729987 is an apocalyptic number.

73729987 is a deficient number, since it is larger than the sum of its proper divisors (1).

73729987 is an equidigital number, since it uses as much as digits as its factorization.

73729987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1333584, while the sum is 52.

The square root of 73729987 is about 8586.6167376913. The cubic root of 73729987 is about 419.3223899762.

The spelling of 73729987 in words is "seventy-three million, seven hundred twenty-nine thousand, nine hundred eighty-seven".