39977230749 has 4 divisors (see below), whose sum is σ = 53302974336. Its totient is φ = 26651487164.

The previous prime is 39977230747. The next prime is 39977230837. The reversal of 39977230749 is 94703277993.

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 not a de Polignac number, because 39977230749 - 2¹ = 39977230747 is a prime.

It is a super-2 number, since 2×39977230749² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 39977230692 and 39977230701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39977230747) 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, 6662871789 + ... + 6662871794.

It is an arithmetic number, because the mean of its divisors is an integer number (13325743584).

Almost surely, 2^39977230749 is an apocalyptic number.

It is an amenable number.

39977230749 is a deficient number, since it is larger than the sum of its proper divisors (13325743587).

39977230749 is a wasteful number, since it uses less digits than its factorization.

39977230749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13325743586.

The product of its (nonzero) digits is 18003384, while the sum is 60.

The spelling of 39977230749 in words is "thirty-nine billion, nine hundred seventy-seven million, two hundred thirty thousand, seven hundred forty-nine".