46401391 has 2 divisors, whose sum is σ = 46401392. Its totient is φ = 46401390.

The previous prime is 46401371. The next prime is 46401403. The reversal of 46401391 is 19310464.

46401391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 46401391 - 2⁷ = 46401263 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (46401301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23200695 + 23200696.

It is an arithmetic number, because the mean of its divisors is an integer number (23200696).

Almost surely, 2^46401391 is an apocalyptic number.

46401391 is a deficient number, since it is larger than the sum of its proper divisors (1).

46401391 is an equidigital number, since it uses as much as digits as its factorization.

46401391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 46401391 is about 6811.8566485210. The cubic root of 46401391 is about 359.3439466148.

The spelling of 46401391 in words is "forty-six million, four hundred one thousand, three hundred ninety-one".