3977423871 has 8 divisors (see below), whose sum is σ = 5303759664. Its totient is φ = 2651352000.

The previous prime is 3977423869. The next prime is 3977423873. The reversal of 3977423871 is 1783247793.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3977423869) and next prime (3977423873).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3977423871 - 2¹ = 3977423869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3977423873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27630 + ... + 93371.

It is an arithmetic number, because the mean of its divisors is an integer number (662969958).

Almost surely, 2^3977423871 is an apocalyptic number.

3977423871 is a deficient number, since it is larger than the sum of its proper divisors (1326335793).

3977423871 is a wasteful number, since it uses less digits than its factorization.

3977423871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131961.

The product of its digits is 1778112, while the sum is 51.

The square root of 3977423871 is about 63066.8206825110. The cubic root of 3977423871 is about 1584.4089681718.

The spelling of 3977423871 in words is "three billion, nine hundred seventy-seven million, four hundred twenty-three thousand, eight hundred seventy-one".