47434657 has 4 divisors (see below), whose sum is σ = 47466496. Its totient is φ = 47402820.

The previous prime is 47434631. The next prime is 47434661. The reversal of 47434657 is 75643474.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75643474 = 2 ⋅37821737.

It is a cyclic number.

It is not a de Polignac number, because 47434657 - 2⁷ = 47434529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47434157) 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, 13569 + ... + 16702.

It is an arithmetic number, because the mean of its divisors is an integer number (11866624).

Almost surely, 2^47434657 is an apocalyptic number.

It is an amenable number.

47434657 is a deficient number, since it is larger than the sum of its proper divisors (31839).

47434657 is a wasteful number, since it uses less digits than its factorization.

47434657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31838.

The product of its digits is 282240, while the sum is 40.

The square root of 47434657 is about 6887.2822651609. The cubic root of 47434657 is about 361.9916794482.

The spelling of 47434657 in words is "forty-seven million, four hundred thirty-four thousand, six hundred fifty-seven".