47949081 has 4 divisors (see below), whose sum is σ = 63932112. Its totient is φ = 31966052.

The previous prime is 47949079. The next prime is 47949107. The reversal of 47949081 is 18094974.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47949081 - 2¹ = 47949079 is a prime.

It is a super-2 number, since 2×47949081² = 4598228737489122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47949581) 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, 7991511 + ... + 7991516.

It is an arithmetic number, because the mean of its divisors is an integer number (15983028).

Almost surely, 2^47949081 is an apocalyptic number.

It is an amenable number.

47949081 is a deficient number, since it is larger than the sum of its proper divisors (15983031).

47949081 is a wasteful number, since it uses less digits than its factorization.

47949081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15983030.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 47949081 is about 6924.5274929052. The cubic root of 47949081 is about 363.2955648160.

The spelling of 47949081 in words is "forty-seven million, nine hundred forty-nine thousand, eighty-one".