47667491 has 4 divisors (see below), whose sum is σ = 49205184. Its totient is φ = 46129800.

The previous prime is 47667479. The next prime is 47667497. The reversal of 47667491 is 19476674.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47667491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47667497) 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, 768800 + ... + 768861.

It is an arithmetic number, because the mean of its divisors is an integer number (12301296).

Almost surely, 2^47667491 is an apocalyptic number.

47667491 is a deficient number, since it is larger than the sum of its proper divisors (1537693).

47667491 is a wasteful number, since it uses less digits than its factorization.

47667491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537692.

The product of its digits is 254016, while the sum is 44.

The square root of 47667491 is about 6904.1647575938. The cubic root of 47667491 is about 362.5829942353.

It can be divided in two parts, 476674 and 91, that multiplied together give a palindrome (43377334).

The spelling of 47667491 in words is "forty-seven million, six hundred sixty-seven thousand, four hundred ninety-one".