47399957 has 8 divisors (see below), whose sum is σ = 52053312. Its totient is φ = 42804000.

The previous prime is 47399939. The next prime is 47399959. The reversal of 47399957 is 75999374.

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 a de Polignac number, because none of the positive numbers 2^k-47399957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47399899 and 47399908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47399959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12608 + ... + 15929.

It is an arithmetic number, because the mean of its divisors is an integer number (6506664).

Almost surely, 2^47399957 is an apocalyptic number.

It is an amenable number.

47399957 is a deficient number, since it is larger than the sum of its proper divisors (4653355).

47399957 is a wasteful number, since it uses less digits than its factorization.

47399957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28699.

The product of its digits is 2143260, while the sum is 53.

The square root of 47399957 is about 6884.7626683859. The cubic root of 47399957 is about 361.9033883387.

It can be divided in two parts, 47 and 399957, that added together give a palindrome (400004).

The spelling of 47399957 in words is "forty-seven million, three hundred ninety-nine thousand, nine hundred fifty-seven".