3942506479 has 4 divisors (see below), whose sum is σ = 4150006840. Its totient is φ = 3735006120.

The previous prime is 3942506467. The next prime is 3942506501. The reversal of 3942506479 is 9746052493.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9746052493 = 47 ⋅207362819.

It is a cyclic number.

It is not a de Polignac number, because 3942506479 - 2²³ = 3934117871 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 (3942506419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103750152 + ... + 103750189.

It is an arithmetic number, because the mean of its divisors is an integer number (1037501710).

Almost surely, 2^3942506479 is an apocalyptic number.

3942506479 is a deficient number, since it is larger than the sum of its proper divisors (207500361).

3942506479 is a wasteful number, since it uses less digits than its factorization.

3942506479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207500360.

The product of its (nonzero) digits is 1632960, while the sum is 49.

The square root of 3942506479 is about 62789.3818969418. The cubic root of 3942506479 is about 1579.7588799118.

The spelling of 3942506479 in words is "three billion, nine hundred forty-two million, five hundred six thousand, four hundred seventy-nine".