3942999997 has 4 divisors (see below), whose sum is σ = 3943560220. Its totient is φ = 3942439776.

The previous prime is 3942999967. The next prime is 3943000001. The reversal of 3942999997 is 7999992493.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7999992493 = 56713 ⋅141061.

It can be written as a sum of positive squares in 2 ways, for example, as 1160015481 + 2782984516 = 34059^2 + 52754^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3942999997 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 (3942999967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269418 + ... + 283675.

It is an arithmetic number, because the mean of its divisors is an integer number (985890055).

Almost surely, 2^3942999997 is an apocalyptic number.

It is an amenable number.

3942999997 is a deficient number, since it is larger than the sum of its proper divisors (560223).

3942999997 is an equidigital number, since it uses as much as digits as its factorization.

3942999997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560222.

The product of its digits is 89282088, while the sum is 70.

The square root of 3942999997 is about 62793.3117218705. The cubic root of 3942999997 is about 1579.8247945711.

The spelling of 3942999997 in words is "three billion, nine hundred forty-two million, nine hundred ninety-nine thousand, nine hundred ninety-seven".