47149090 has 8 divisors (see below), whose sum is σ = 84868380. Its totient is φ = 18859632.

The previous prime is 47149079. The next prime is 47149093. The reversal of 47149090 is 9094174.

It can be written as a sum of positive squares in 2 ways, for example, as 43811161 + 3337929 = 6619^2 + 1827^2 .

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

It is not an unprimeable number, because it can be changed into a prime (47149093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2357445 + ... + 2357464.

Almost surely, 2^47149090 is an apocalyptic number.

47149090 is a deficient number, since it is larger than the sum of its proper divisors (37719290).

47149090 is a wasteful number, since it uses less digits than its factorization.

47149090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4714916.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 47149090 is about 6866.5194968048. The cubic root of 47149090 is about 361.2637938085.

The spelling of 47149090 in words is "forty-seven million, one hundred forty-nine thousand, ninety".