73945897 has 4 divisors (see below), whose sum is σ = 77160960. Its totient is φ = 70730836.

The previous prime is 73945889. The next prime is 73945933. The reversal of 73945897 is 79854937.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 73945897 - 2³ = 73945889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73945867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1607497 + ... + 1607542.

It is an arithmetic number, because the mean of its divisors is an integer number (19290240).

Almost surely, 2^73945897 is an apocalyptic number.

It is an amenable number.

73945897 is a deficient number, since it is larger than the sum of its proper divisors (3215063).

73945897 is a wasteful number, since it uses less digits than its factorization.

73945897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3215062.

The product of its digits is 1905120, while the sum is 52.

The square root of 73945897 is about 8599.1800190483. The cubic root of 73945897 is about 419.7313039502.

The spelling of 73945897 in words is "seventy-three million, nine hundred forty-five thousand, eight hundred ninety-seven".