749949691 has 2 divisors, whose sum is σ = 749949692. Its totient is φ = 749949690.

The previous prime is 749949667. The next prime is 749949721. The reversal of 749949691 is 196949947.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 749949691 - 2¹³ = 749941499 is a prime.

It is not a weakly prime, because it can be changed into another prime (749949391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374974845 + 374974846.

It is an arithmetic number, because the mean of its divisors is an integer number (374974846).

Almost surely, 2^749949691 is an apocalyptic number.

749949691 is a deficient number, since it is larger than the sum of its proper divisors (1).

749949691 is an equidigital number, since it uses as much as digits as its factorization.

749949691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4408992, while the sum is 58.

The square root of 749949691 is about 27385.2093473831. The cubic root of 749949691 is about 908.5399809574.

The spelling of 749949691 in words is "seven hundred forty-nine million, nine hundred forty-nine thousand, six hundred ninety-one".