47139783 has 8 divisors (see below), whose sum is σ = 62886528. Its totient is φ = 31409784.

The previous prime is 47139751. The next prime is 47139803. The reversal of 47139783 is 38793174.

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

It is not a de Polignac number, because 47139783 - 2⁵ = 47139751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47139713) 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, 5766 + ... + 11292.

It is an arithmetic number, because the mean of its divisors is an integer number (7860816).

Almost surely, 2^47139783 is an apocalyptic number.

47139783 is a deficient number, since it is larger than the sum of its proper divisors (15746745).

47139783 is a wasteful number, since it uses less digits than its factorization.

47139783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8373.

The product of its digits is 127008, while the sum is 42.

The square root of 47139783 is about 6865.8417546576. The cubic root of 47139783 is about 361.2400216750.

The spelling of 47139783 in words is "forty-seven million, one hundred thirty-nine thousand, seven hundred eighty-three".