47090729 has 8 divisors (see below), whose sum is σ = 56158080. Its totient is φ = 38608416.

The previous prime is 47090717. The next prime is 47090753. The reversal of 47090729 is 92709074.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47090729 - 2¹⁶ = 47025193 is a prime.

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 = 47090692 and 47090701.

It is not an unprimeable number, because it can be changed into a prime (47090779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146084 + ... + 146405.

It is an arithmetic number, because the mean of its divisors is an integer number (7019760).

Almost surely, 2^47090729 is an apocalyptic number.

It is an amenable number.

47090729 is a deficient number, since it is larger than the sum of its proper divisors (9067351).

47090729 is a wasteful number, since it uses less digits than its factorization.

47090729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292519.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 47090729 is about 6862.2685024706. The cubic root of 47090729 is about 361.1146751908.

The spelling of 47090729 in words is "forty-seven million, ninety thousand, seven hundred twenty-nine".