73001989 has 2 divisors, whose sum is σ = 73001990. Its totient is φ = 73001988.

The previous prime is 73001947. The next prime is 73002031. The reversal of 73001989 is 98910037.

It is a balanced prime because it is at equal distance from previous prime (73001947) and next prime (73002031).

It can be written as a sum of positive squares in only one way, i.e., 56881764 + 16120225 = 7542^2 + 4015^2 .

It is a cyclic number.

It is not a de Polignac number, because 73001989 - 2²⁵ = 39447557 is a prime.

It is a super-2 number, since 2×73001989² = 10658580795912242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73007989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36500994 + 36500995.

It is an arithmetic number, because the mean of its divisors is an integer number (36500995).

Almost surely, 2^73001989 is an apocalyptic number.

It is an amenable number.

73001989 is a deficient number, since it is larger than the sum of its proper divisors (1).

73001989 is an equidigital number, since it uses as much as digits as its factorization.

73001989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 73001989 is about 8544.1201419456. The cubic root of 73001989 is about 417.9377153597.

The spelling of 73001989 in words is "seventy-three million, one thousand, nine hundred eighty-nine".