939491407 has 2 divisors, whose sum is σ = 939491408. Its totient is φ = 939491406.

The previous prime is 939491401. The next prime is 939491459. The reversal of 939491407 is 704194939.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 939491407 - 2¹¹ = 939489359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (939491401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469745703 + 469745704.

It is an arithmetic number, because the mean of its divisors is an integer number (469745704).

Almost surely, 2^939491407 is an apocalyptic number.

939491407 is a deficient number, since it is larger than the sum of its proper divisors (1).

939491407 is an equidigital number, since it uses as much as digits as its factorization.

939491407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 939491407 is about 30651.1240740042. The cubic root of 939491407 is about 979.4094064042.

The spelling of 939491407 in words is "nine hundred thirty-nine million, four hundred ninety-one thousand, four hundred seven".