39977231477 has 8 divisors (see below), whose sum is σ = 41801041536. Its totient is φ = 38160560592.

The previous prime is 39977231443. The next prime is 39977231491. The reversal of 39977231477 is 77413277993.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 39977231477 - 2³⁴ = 22797362293 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 (39977230477) 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 7 ways as a sum of consecutive naturals, for example, 1773338 + ... + 1795739.

It is an arithmetic number, because the mean of its divisors is an integer number (5225130192).

Almost surely, 2^39977231477 is an apocalyptic number.

It is an amenable number.

39977231477 is a deficient number, since it is larger than the sum of its proper divisors (1823810059).

39977231477 is a wasteful number, since it uses less digits than its factorization.

39977231477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3569587.

The product of its digits is 14002632, while the sum is 59.

The spelling of 39977231477 in words is "thirty-nine billion, nine hundred seventy-seven million, two hundred thirty-one thousand, four hundred seventy-seven".