3942999973 has 4 divisors (see below), whose sum is σ = 4301454528. Its totient is φ = 3584545420.

The previous prime is 3942999967. The next prime is 3943000001. The reversal of 3942999973 is 3799992493.

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 a de Polignac number, because none of the positive numbers 2^k-3942999973 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 (3942999943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179227261 + ... + 179227282.

It is an arithmetic number, because the mean of its divisors is an integer number (1075363632).

Almost surely, 2^3942999973 is an apocalyptic number.

It is an amenable number.

3942999973 is a deficient number, since it is larger than the sum of its proper divisors (358454555).

3942999973 is a wasteful number, since it uses less digits than its factorization.

3942999973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358454554.

The product of its digits is 29760696, while the sum is 64.

The square root of 3942999973 is about 62793.3115307674. The cubic root of 3942999973 is about 1579.8247913658.

The spelling of 3942999973 in words is "three billion, nine hundred forty-two million, nine hundred ninety-nine thousand, nine hundred seventy-three".