47965646 has 4 divisors (see below), whose sum is σ = 71948472. Its totient is φ = 23982822.

The previous prime is 47965591. The next prime is 47965651. The reversal of 47965646 is 64656974.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64656974 = 2 ⋅32328487.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 47965646.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 11991410 + ... + 11991413.

It is an arithmetic number, because the mean of its divisors is an integer number (17987118).

Almost surely, 2^47965646 is an apocalyptic number.

47965646 is a deficient number, since it is larger than the sum of its proper divisors (23982826).

47965646 is a wasteful number, since it uses less digits than its factorization.

47965646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23982825.

The product of its digits is 1088640, while the sum is 47.

The square root of 47965646 is about 6925.7235001117. The cubic root of 47965646 is about 363.3373959837.

The spelling of 47965646 in words is "forty-seven million, nine hundred sixty-five thousand, six hundred forty-six".