47391001 has 4 divisors (see below), whose sum is σ = 54161152. Its totient is φ = 40620852.

The previous prime is 47390989. The next prime is 47391007. The reversal of 47391001 is 10019374.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47391001 - 2⁷ = 47390873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47391007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3385065 + ... + 3385078.

It is an arithmetic number, because the mean of its divisors is an integer number (13540288).

Almost surely, 2^47391001 is an apocalyptic number.

It is an amenable number.

47391001 is a deficient number, since it is larger than the sum of its proper divisors (6770151).

47391001 is an equidigital number, since it uses as much as digits as its factorization.

47391001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6770150.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 47391001 is about 6884.1122158198. The cubic root of 47391001 is about 361.8805935860.

The spelling of 47391001 in words is "forty-seven million, three hundred ninety-one thousand, one".