47139801 has 4 divisors (see below), whose sum is σ = 62853072. Its totient is φ = 31426532.

The previous prime is 47139751. The next prime is 47139803. The reversal of 47139801 is 10893174.

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 47139801 - 2¹⁵ = 47107033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47139803) 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, 7856631 + ... + 7856636.

It is an arithmetic number, because the mean of its divisors is an integer number (15713268).

Almost surely, 2^47139801 is an apocalyptic number.

It is an amenable number.

47139801 is a deficient number, since it is larger than the sum of its proper divisors (15713271).

47139801 is a wasteful number, since it uses less digits than its factorization.

47139801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15713270.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 47139801 is about 6865.8430654946. The cubic root of 47139801 is about 361.2400676539.

The spelling of 47139801 in words is "forty-seven million, one hundred thirty-nine thousand, eight hundred one".