47129919 has 8 divisors (see below), whose sum is σ = 62947200. Its totient is φ = 31366296.

The previous prime is 47129911. The next prime is 47129923. The reversal of 47129919 is 91992174.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47129919 - 2³ = 47129911 is a prime.

It is a super-2 number, since 2×47129919² = 4442458529893122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47129911) 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, 11317 + ... + 14910.

It is an arithmetic number, because the mean of its divisors is an integer number (7868400).

Almost surely, 2^47129919 is an apocalyptic number.

47129919 is a deficient number, since it is larger than the sum of its proper divisors (15817281).

47129919 is a wasteful number, since it uses less digits than its factorization.

47129919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26829.

The product of its digits is 40824, while the sum is 42.

The square root of 47129919 is about 6865.1233783524. The cubic root of 47129919 is about 361.2148234247.

The spelling of 47129919 in words is "forty-seven million, one hundred twenty-nine thousand, nine hundred nineteen".