47749005 has 24 divisors (see below), whose sum is σ = 87634872. Its totient is φ = 23967744.

The previous prime is 47749001. The next prime is 47749027. The reversal of 47749005 is 50094774.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 675684 + 47073321 = 822^2 + 6861^2 .

It is not a de Polignac number, because 47749005 - 2² = 47749001 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47749001) 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, 30444 + ... + 31973.

It is an arithmetic number, because the mean of its divisors is an integer number (3651453).

Almost surely, 2^47749005 is an apocalyptic number.

47749005 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

47749005 is a deficient number, since it is larger than the sum of its proper divisors (39885867).

47749005 is a wasteful number, since it uses less digits than its factorization.

47749005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62445 (or 62442 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 47749005 is about 6910.0654844943. The cubic root of 47749005 is about 362.7895554110.

The spelling of 47749005 in words is "forty-seven million, seven hundred forty-nine thousand, five".