747834991 has 2 divisors, whose sum is σ = 747834992. Its totient is φ = 747834990.

The previous prime is 747834961. The next prime is 747835013. The reversal of 747834991 is 199438747.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 747834991 - 2⁵ = 747834959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (747834911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 373917495 + 373917496.

It is an arithmetic number, because the mean of its divisors is an integer number (373917496).

Almost surely, 2^747834991 is an apocalyptic number.

747834991 is a deficient number, since it is larger than the sum of its proper divisors (1).

747834991 is an equidigital number, since it uses as much as digits as its factorization.

747834991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524096, while the sum is 52.

The square root of 747834991 is about 27346.5718326813. The cubic root of 747834991 is about 907.6852133055.

The spelling of 747834991 in words is "seven hundred forty-seven million, eight hundred thirty-four thousand, nine hundred ninety-one".