47775904929 has 9 divisors (see below), whose sum is σ = 69010587633. Its totient is φ = 31850166132.

The previous prime is 47775904927. The next prime is 47775904931. The reversal of 47775904929 is 92940957774.

The square root of 47775904929 is 218577.

It is a perfect power (a square), and thus also a powerful number.

47775904929 is a `hidden beast` number, since 4 + 77 + 75 + 9 + 0 + 492 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (47775904927) and next prime (47775904931).

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 47775904929 - 2¹ = 47775904927 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47775904927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 619302 + ... + 692160.

Almost surely, 2^47775904929 is an apocalyptic number.

47775904929 is the 218577-th square number.

47775904929 is the 109289-th centered octagonal number.

It is an amenable number.

47775904929 is a deficient number, since it is larger than the sum of its proper divisors (21234682704).

47775904929 is an frugal number, since it uses more digits than its factorization.

47775904929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145724 (or 72862 counting only the distinct ones).

The product of its (nonzero) digits is 40007520, while the sum is 63.

The spelling of 47775904929 in words is "forty-seven billion, seven hundred seventy-five million, nine hundred four thousand, nine hundred twenty-nine".