47749026391 has 8 divisors (see below), whose sum is σ = 52095867264. Its totient is φ = 43403188920.

The previous prime is 47749026371. The next prime is 47749026397. The reversal of 47749026391 is 19362094774.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47749026391 - 2²³ = 47740637783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47749026397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149565 + ... + 343318.

It is an arithmetic number, because the mean of its divisors is an integer number (6511983408).

Almost surely, 2^47749026391 is an apocalyptic number.

47749026391 is a deficient number, since it is larger than the sum of its proper divisors (4346840873).

47749026391 is a wasteful number, since it uses less digits than its factorization.

47749026391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501701.

The product of its (nonzero) digits is 2286144, while the sum is 52.

The spelling of 47749026391 in words is "forty-seven billion, seven hundred forty-nine million, twenty-six thousand, three hundred ninety-one".