47198993 has 4 divisors (see below), whose sum is σ = 48296688. Its totient is φ = 46101300.

The previous prime is 47198981. The next prime is 47199001. The reversal of 47198993 is 39989174.

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, and also an emirpimes, since its reverse is a distinct semiprime: 39989174 = 2 ⋅19994587.

It is a cyclic number.

It is not a de Polignac number, because 47198993 - 2⁶ = 47198929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47198693) 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, 548783 + ... + 548868.

It is an arithmetic number, because the mean of its divisors is an integer number (12074172).

Almost surely, 2^47198993 is an apocalyptic number.

47198993 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

47198993 is a deficient number, since it is larger than the sum of its proper divisors (1097695).

47198993 is a wasteful number, since it uses less digits than its factorization.

47198993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097694.

The product of its digits is 489888, while the sum is 50.

The square root of 47198993 is about 6870.1523272778. The cubic root of 47198993 is about 361.3912037645.

The spelling of 47198993 in words is "forty-seven million, one hundred ninety-eight thousand, nine hundred ninety-three".