47697149 has 4 divisors (see below), whose sum is σ = 48169500. Its totient is φ = 47224800.

The previous prime is 47697113. The next prime is 47697157. The reversal of 47697149 is 94179674.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23863225 + 23833924 = 4885^2 + 4882^2 .

It is a cyclic number.

It is not a de Polignac number, because 47697149 - 2⁸ = 47696893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47697109) 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, 236024 + ... + 236225.

It is an arithmetic number, because the mean of its divisors is an integer number (12042375).

Almost surely, 2^47697149 is an apocalyptic number.

It is an amenable number.

47697149 is a deficient number, since it is larger than the sum of its proper divisors (472351).

47697149 is a wasteful number, since it uses less digits than its factorization.

47697149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472350.

The product of its digits is 381024, while the sum is 47.

The square root of 47697149 is about 6906.3122576379. The cubic root of 47697149 is about 362.6581765504.

The spelling of 47697149 in words is "forty-seven million, six hundred ninety-seven thousand, one hundred forty-nine".