47449939 has 8 divisors (see below), whose sum is σ = 48384000. Its totient is φ = 46523400.

The previous prime is 47449879. The next prime is 47449949. The reversal of 47449939 is 93994474.

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 47449939 - 2⁷ = 47449811 is a prime.

It is a super-2 number, since 2×47449939² = 4502993422207442, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47449892 and 47449901.

It is not an unprimeable number, because it can be changed into a prime (47449949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11812 + ... + 15310.

It is an arithmetic number, because the mean of its divisors is an integer number (6048000).

Almost surely, 2^47449939 is an apocalyptic number.

47449939 is a deficient number, since it is larger than the sum of its proper divisors (934061).

47449939 is a wasteful number, since it uses less digits than its factorization.

47449939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3761.

The product of its digits is 979776, while the sum is 49.

The square root of 47449939 is about 6888.3916119803. The cubic root of 47449939 is about 362.0305495010.

The spelling of 47449939 in words is "forty-seven million, four hundred forty-nine thousand, nine hundred thirty-nine".