47977399 has 4 divisors (see below), whose sum is σ = 48015040. Its totient is φ = 47939760.

The previous prime is 47977393. The next prime is 47977453. The reversal of 47977399 is 99377974.

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 47977399 - 2¹¹ = 47975351 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 (47977393) 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, 16839 + ... + 19480.

It is an arithmetic number, because the mean of its divisors is an integer number (12003760).

Almost surely, 2^47977399 is an apocalyptic number.

47977399 is a deficient number, since it is larger than the sum of its proper divisors (37641).

47977399 is a wasteful number, since it uses less digits than its factorization.

47977399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37640.

The product of its digits is 3000564, while the sum is 55.

The square root of 47977399 is about 6926.5719515501. The cubic root of 47977399 is about 363.3670696914.

The spelling of 47977399 in words is "forty-seven million, nine hundred seventy-seven thousand, three hundred ninety-nine".