47949491 has 2 divisors, whose sum is σ = 47949492. Its totient is φ = 47949490.

The previous prime is 47949479. The next prime is 47949497. The reversal of 47949491 is 19494974.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47949491 is a prime.

It is a super-3 number, since 3×47949491³ (a number of 24 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47949497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23974745 + 23974746.

It is an arithmetic number, because the mean of its divisors is an integer number (23974746).

Almost surely, 2^47949491 is an apocalyptic number.

47949491 is a deficient number, since it is larger than the sum of its proper divisors (1).

47949491 is an equidigital number, since it uses as much as digits as its factorization.

47949491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 47.

The square root of 47949491 is about 6924.5570977500. The cubic root of 47949491 is about 363.2966002947.

The spelling of 47949491 in words is "forty-seven million, nine hundred forty-nine thousand, four hundred ninety-one".