47195981 has 16 divisors (see below), whose sum is σ = 58613760. Its totient is φ = 37085040.

The previous prime is 47195971. The next prime is 47195989. The reversal of 47195981 is 18959174.

It is a cyclic number.

It is not a de Polignac number, because 47195981 - 2¹⁰ = 47194957 is a prime.

It is a super-2 number, since 2×47195981² = 4454921245104722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47195989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1601 + ... + 9846.

It is an arithmetic number, because the mean of its divisors is an integer number (3663360).

Almost surely, 2^47195981 is an apocalyptic number.

It is an amenable number.

47195981 is a deficient number, since it is larger than the sum of its proper divisors (11417779).

47195981 is a wasteful number, since it uses less digits than its factorization.

47195981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11504.

The product of its digits is 90720, while the sum is 44.

The square root of 47195981 is about 6869.9331146671. The cubic root of 47195981 is about 361.3835162173.

The spelling of 47195981 in words is "forty-seven million, one hundred ninety-five thousand, nine hundred eighty-one".