47921107 has 4 divisors (see below), whose sum is σ = 51607360. Its totient is φ = 44234856.

The previous prime is 47921099. The next prime is 47921117. The reversal of 47921107 is 70112974.

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 47921107 - 2³ = 47921099 is a prime.

It is a super-2 number, since 2×47921107² = 4592864992210898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47921117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1843107 + ... + 1843132.

It is an arithmetic number, because the mean of its divisors is an integer number (12901840).

Almost surely, 2^47921107 is an apocalyptic number.

47921107 is a deficient number, since it is larger than the sum of its proper divisors (3686253).

47921107 is a wasteful number, since it uses less digits than its factorization.

47921107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3686252.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 47921107 is about 6922.5072769915. The cubic root of 47921107 is about 363.2249009164.

The spelling of 47921107 in words is "forty-seven million, nine hundred twenty-one thousand, one hundred seven".