47644366 has 48 divisors (see below), whose sum is σ = 91560240. Its totient is φ = 18385920.

The previous prime is 47644357. The next prime is 47644369. The reversal of 47644366 is 66344674.

It is a super-2 number, since 2×47644366² = 4539971223083912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47644369) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 207940 + ... + 208168.

It is an arithmetic number, because the mean of its divisors is an integer number (1907505).

Almost surely, 2^47644366 is an apocalyptic number.

47644366 is a deficient number, since it is larger than the sum of its proper divisors (43915874).

47644366 is a wasteful number, since it uses less digits than its factorization.

47644366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449 (or 442 counting only the distinct ones).

The product of its digits is 290304, while the sum is 40.

The square root of 47644366 is about 6902.4898406300. The cubic root of 47644366 is about 362.5243512773.

The spelling of 47644366 in words is "forty-seven million, six hundred forty-four thousand, three hundred sixty-six".