47890137 has 4 divisors (see below), whose sum is σ = 63853520. Its totient is φ = 31926756.

The previous prime is 47890093. The next prime is 47890147. The reversal of 47890137 is 73109874.

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 not a de Polignac number, because 47890137 - 2¹⁴ = 47873753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47890095 and 47890104.

It is not an unprimeable number, because it can be changed into a prime (47890147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7981687 + ... + 7981692.

It is an arithmetic number, because the mean of its divisors is an integer number (15963380).

Almost surely, 2^47890137 is an apocalyptic number.

It is an amenable number.

47890137 is a deficient number, since it is larger than the sum of its proper divisors (15963383).

47890137 is a wasteful number, since it uses less digits than its factorization.

47890137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15963382.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 47890137 is about 6920.2700091832. The cubic root of 47890137 is about 363.1466368690.

The spelling of 47890137 in words is "forty-seven million, eight hundred ninety thousand, one hundred thirty-seven".