47930915 has 4 divisors (see below), whose sum is σ = 57517104. Its totient is φ = 38344728.

The previous prime is 47930899. The next prime is 47930917. The reversal of 47930915 is 51903974.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51903974 = 2 ⋅25951987.

It is a cyclic number.

It is not a de Polignac number, because 47930915 - 2⁴ = 47930899 is a prime.

It is a super-2 number, since 2×47930915² = 4594745225474450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47930917) 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, 4793087 + ... + 4793096.

It is an arithmetic number, because the mean of its divisors is an integer number (14379276).

Almost surely, 2^47930915 is an apocalyptic number.

47930915 is a deficient number, since it is larger than the sum of its proper divisors (9586189).

47930915 is an equidigital number, since it uses as much as digits as its factorization.

47930915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9586188.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 47930915 is about 6923.2156545929. The cubic root of 47930915 is about 363.2496796067.

The spelling of 47930915 in words is "forty-seven million, nine hundred thirty thousand, nine hundred fifteen".