47090709 has 12 divisors (see below), whose sum is σ = 68472352. Its totient is φ = 31185000.

The previous prime is 47090707. The next prime is 47090717. The reversal of 47090709 is 90709074.

It is not a de Polignac number, because 47090709 - 2¹ = 47090707 is a prime.

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

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47090707) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15967 + ... + 18684.

Almost surely, 2^47090709 is an apocalyptic number.

It is an amenable number.

47090709 is a deficient number, since it is larger than the sum of its proper divisors (21381643).

47090709 is a wasteful number, since it uses less digits than its factorization.

47090709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34808 (or 34805 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 47090709 is about 6862.2670452264. The cubic root of 47090709 is about 361.1146240675.

The spelling of 47090709 in words is "forty-seven million, ninety thousand, seven hundred nine".