39957905419 has 4 divisors (see below), whose sum is σ = 40932488520. Its totient is φ = 38983322320.

The previous prime is 39957905417. The next prime is 39957905423. The reversal of 39957905419 is 91450975993.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 39957905419 - 2¹ = 39957905417 is a prime.

It is a super-3 number, since 3×39957905419³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39957905411) 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, 487291489 + ... + 487291570.

It is an arithmetic number, because the mean of its divisors is an integer number (10233122130).

Almost surely, 2^39957905419 is an apocalyptic number.

39957905419 is a deficient number, since it is larger than the sum of its proper divisors (974583101).

39957905419 is an equidigital number, since it uses as much as digits as its factorization.

39957905419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974583100.

The product of its (nonzero) digits is 13778100, while the sum is 61.

The spelling of 39957905419 in words is "thirty-nine billion, nine hundred fifty-seven million, nine hundred five thousand, four hundred nineteen".