29472947 has 16 divisors (see below), whose sum is σ = 34475712. Its totient is φ = 24675840.

The previous prime is 29472941. The next prime is 29472953. The reversal of 29472947 is 74927492.

It is an interprime number because it is at equal distance from previous prime (29472941) and next prime (29472953).

It is a de Polignac number, because none of the positive numbers 2^k-29472947 is a prime.

It is a super-3 number, since 3×29472947³ (a number of 23 digits) contains 333 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29472898 and 29472907.

It is not an unprimeable number, because it can be changed into a prime (29472941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69797 + ... + 70217.

It is an arithmetic number, because the mean of its divisors is an integer number (2154732).

Almost surely, 2^29472947 is an apocalyptic number.

29472947 is a deficient number, since it is larger than the sum of its proper divisors (5002765).

29472947 is a wasteful number, since it uses less digits than its factorization.

29472947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638.

The product of its digits is 254016, while the sum is 44.

The square root of 29472947 is about 5428.8992438615. The cubic root of 29472947 is about 308.8928490417.

The spelling of 29472947 in words is "twenty-nine million, four hundred seventy-two thousand, nine hundred forty-seven".