47769981 has 8 divisors (see below), whose sum is σ = 72792384. Its totient is φ = 27297120.

The previous prime is 47769979. The next prime is 47770027. The reversal of 47769981 is 18996774.

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

It is not a de Polignac number, because 47769981 - 2¹ = 47769979 is a prime.

It is a super-2 number, since 2×47769981² = 4563942169480722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47769901) 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, 1137360 + ... + 1137401.

It is an arithmetic number, because the mean of its divisors is an integer number (9099048).

Almost surely, 2^47769981 is an apocalyptic number.

It is an amenable number.

47769981 is a deficient number, since it is larger than the sum of its proper divisors (25022403).

47769981 is a wasteful number, since it uses less digits than its factorization.

47769981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2274771.

The product of its digits is 762048, while the sum is 51.

The square root of 47769981 is about 6911.5831037469. The cubic root of 47769981 is about 362.8426717685.

The spelling of 47769981 in words is "forty-seven million, seven hundred sixty-nine thousand, nine hundred eighty-one".