3973697407 has 4 divisors (see below), whose sum is σ = 3973848840. Its totient is φ = 3973545976.

The previous prime is 3973697401. The next prime is 3973697417. The reversal of 3973697407 is 7047963793.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3973697407 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 (3973697401) 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, 25057 + ... + 92602.

It is an arithmetic number, because the mean of its divisors is an integer number (993462210).

Almost surely, 2^3973697407 is an apocalyptic number.

3973697407 is a deficient number, since it is larger than the sum of its proper divisors (151433).

3973697407 is a wasteful number, since it uses less digits than its factorization.

3973697407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151432.

The product of its (nonzero) digits is 6001128, while the sum is 55.

The square root of 3973697407 is about 63037.2699837168. The cubic root of 3973697407 is about 1583.9140005717.

The spelling of 3973697407 in words is "three billion, nine hundred seventy-three million, six hundred ninety-seven thousand, four hundred seven".