47969905 has 8 divisors (see below), whose sum is σ = 57699432. Its totient is φ = 38285568.

The previous prime is 47969893. The next prime is 47969941. The reversal of 47969905 is 50996974.

It can be written as a sum of positive squares in 4 ways, for example, as 4092529 + 43877376 = 2023^2 + 6624^2 .

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 47969905 - 2⁷ = 47969777 is a prime.

It is a super-2 number, since 2×47969905² = 4602223571418050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8914 + ... + 13243.

It is an arithmetic number, because the mean of its divisors is an integer number (7212429).

Almost surely, 2^47969905 is an apocalyptic number.

It is an amenable number.

47969905 is a deficient number, since it is larger than the sum of its proper divisors (9729527).

47969905 is a wasteful number, since it uses less digits than its factorization.

47969905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22595.

The product of its (nonzero) digits is 612360, while the sum is 49.

The square root of 47969905 is about 6926.0309701878. The cubic root of 47969905 is about 363.3481495702.

The spelling of 47969905 in words is "forty-seven million, nine hundred sixty-nine thousand, nine hundred five".