47643619 has 4 divisors (see below), whose sum is σ = 48115440. Its totient is φ = 47171800.

The previous prime is 47643611. The next prime is 47643643. The reversal of 47643619 is 91634674.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47643619 - 2³ = 47643611 is a prime.

It is a super-2 number, since 2×47643619² = 4539828862834322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47643611) 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, 235759 + ... + 235960.

It is an arithmetic number, because the mean of its divisors is an integer number (12028860).

Almost surely, 2^47643619 is an apocalyptic number.

47643619 is a deficient number, since it is larger than the sum of its proper divisors (471821).

47643619 is a wasteful number, since it uses less digits than its factorization.

47643619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471820.

The product of its digits is 108864, while the sum is 40.

The square root of 47643619 is about 6902.4357295088. The cubic root of 47643619 is about 362.5224566350.

The spelling of 47643619 in words is "forty-seven million, six hundred forty-three thousand, six hundred nineteen".