73949703397 has 4 divisors (see below), whose sum is σ = 73958693740. Its totient is φ = 73940713056.

The previous prime is 73949703337. The next prime is 73949703413. The reversal of 73949703397 is 79330794937.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79330794937 = 29 ⋅2735544653.

It can be written as a sum of positive squares in 2 ways, for example, as 53033023521 + 20916679876 = 230289^2 + 144626^2 .

It is a cyclic number.

It is not a de Polignac number, because 73949703397 - 2¹⁵ = 73949670629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73949703337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4482822 + ... + 4499287.

It is an arithmetic number, because the mean of its divisors is an integer number (18489673435).

Almost surely, 2^73949703397 is an apocalyptic number.

It is an amenable number.

73949703397 is a deficient number, since it is larger than the sum of its proper divisors (8990343).

73949703397 is an equidigital number, since it uses as much as digits as its factorization.

73949703397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8990342.

The product of its (nonzero) digits is 27005076, while the sum is 61.

The spelling of 73949703397 in words is "seventy-three billion, nine hundred forty-nine million, seven hundred three thousand, three hundred ninety-seven".