47169939 has 4 divisors (see below), whose sum is σ = 62893256. Its totient is φ = 31446624.

The previous prime is 47169937. The next prime is 47169949. The reversal of 47169939 is 93996174.

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

It is not a de Polignac number, because 47169939 - 2¹ = 47169937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47169937) 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, 7861654 + ... + 7861659.

It is an arithmetic number, because the mean of its divisors is an integer number (15723314).

Almost surely, 2^47169939 is an apocalyptic number.

47169939 is a deficient number, since it is larger than the sum of its proper divisors (15723317).

47169939 is a wasteful number, since it uses less digits than its factorization.

47169939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15723316.

The product of its digits is 367416, while the sum is 48.

The square root of 47169939 is about 6868.0374926175. The cubic root of 47169939 is about 361.3170354080.

The spelling of 47169939 in words is "forty-seven million, one hundred sixty-nine thousand, nine hundred thirty-nine".