47749144 has 8 divisors (see below), whose sum is σ = 89529660. Its totient is φ = 23874568.

The previous prime is 47749103. The next prime is 47749151. The reversal of 47749144 is 44194774.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×47749144³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 47749097 and 47749106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2984314 + ... + 2984329.

Almost surely, 2^47749144 is an apocalyptic number.

It is an amenable number.

47749144 is a deficient number, since it is larger than the sum of its proper divisors (41780516).

47749144 is a wasteful number, since it uses less digits than its factorization.

47749144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5968649 (or 5968645 counting only the distinct ones).

The product of its digits is 112896, while the sum is 40.

The square root of 47749144 is about 6910.0755422788. The cubic root of 47749144 is about 362.7899074442.

The spelling of 47749144 in words is "forty-seven million, seven hundred forty-nine thousand, one hundred forty-four".