47540939 has 2 divisors, whose sum is σ = 47540940. Its totient is φ = 47540938.

The previous prime is 47540897. The next prime is 47540951. The reversal of 47540939 is 93904574.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47540939 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 47540896 and 47540905.

It is not a weakly prime, because it can be changed into another prime (47240939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23770469 + 23770470.

It is an arithmetic number, because the mean of its divisors is an integer number (23770470).

Almost surely, 2^47540939 is an apocalyptic number.

47540939 is a deficient number, since it is larger than the sum of its proper divisors (1).

47540939 is an equidigital number, since it uses as much as digits as its factorization.

47540939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 47540939 is about 6894.9937635940. The cubic root of 47540939 is about 362.2618370607.

Subtracting 47540939 from its reverse (93904574), we obtain a triangular number (46363635 = T₉₆₂₉).

It can be divided in two parts, 475 and 40939, that added together give a palindrome (41414).

The spelling of 47540939 in words is "forty-seven million, five hundred forty thousand, nine hundred thirty-nine".