47898781 has 8 divisors (see below), whose sum is σ = 55906560. Its totient is φ = 40182288.

The previous prime is 47898743. The next prime is 47898787. The reversal of 47898781 is 18789874.

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 47898781 - 2⁹ = 47898269 is a prime.

It is a super-2 number, since 2×47898781² = 4588586442571922, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47898787) 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, 72466 + ... + 73123.

It is an arithmetic number, because the mean of its divisors is an integer number (6988320).

Almost surely, 2^47898781 is an apocalyptic number.

It is an amenable number.

47898781 is a deficient number, since it is larger than the sum of its proper divisors (8007779).

47898781 is a wasteful number, since it uses less digits than its factorization.

47898781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145643.

The product of its digits is 903168, while the sum is 52.

The square root of 47898781 is about 6920.8945231090. The cubic root of 47898781 is about 363.1684844482.

The spelling of 47898781 in words is "forty-seven million, eight hundred ninety-eight thousand, seven hundred eighty-one".