747391 has 2 divisors, whose sum is σ = 747392. Its totient is φ = 747390.

The previous prime is 747377. The next prime is 747401. The reversal of 747391 is 193747.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 747391 - 2¹¹ = 745343 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 (747361) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 373695 + 373696.

It is an arithmetic number, because the mean of its divisors is an integer number (373696).

2⁷⁴⁷³⁹¹ is an apocalyptic number.

747391 is a deficient number, since it is larger than the sum of its proper divisors (1).

747391 is an equidigital number, since it uses as much as digits as its factorization.

747391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5292, while the sum is 31.

The square root of 747391 is about 864.5177846638. The cubic root of 747391 is about 90.7505546288.

The spelling of 747391 in words is "seven hundred forty-seven thousand, three hundred ninety-one".