47650949 has 4 divisors (see below), whose sum is σ = 50453964. Its totient is φ = 44847936.

The previous prime is 47650927. The next prime is 47650957. The reversal of 47650949 is 94905674.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94905674 = 2 ⋅47452837.

It can be written as a sum of positive squares in 2 ways, for example, as 14668900 + 32982049 = 3830^2 + 5743^2 .

It is a cyclic number.

It is not a de Polignac number, because 47650949 - 2⁸ = 47650693 is a prime.

It is a super-2 number, since 2×47650949² = 4541225881201202, which contains 22 as substring.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47650649) 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, 1401482 + ... + 1401515.

It is an arithmetic number, because the mean of its divisors is an integer number (12613491).

Almost surely, 2^47650949 is an apocalyptic number.

It is an amenable number.

47650949 is a deficient number, since it is larger than the sum of its proper divisors (2803015).

47650949 is a wasteful number, since it uses less digits than its factorization.

47650949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2803014.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 47650949 is about 6902.9666810727. The cubic root of 47650949 is about 362.5410471157.

The spelling of 47650949 in words is "forty-seven million, six hundred fifty thousand, nine hundred forty-nine".