749496091 has 4 divisors (see below), whose sum is σ = 753683400. Its totient is φ = 745308784.

The previous prime is 749496071. The next prime is 749496107. The reversal of 749496091 is 190694947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 190694947 = 5849 ⋅32603.

It is a cyclic number.

It is not a de Polignac number, because 749496091 - 2¹⁹ = 748971803 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (749496061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2093386 + ... + 2093743.

It is an arithmetic number, because the mean of its divisors is an integer number (188420850).

Almost surely, 2^749496091 is an apocalyptic number.

749496091 is a deficient number, since it is larger than the sum of its proper divisors (4187309).

749496091 is a wasteful number, since it uses less digits than its factorization.

749496091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4187308.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 749496091 is about 27376.9262518640. The cubic root of 749496091 is about 908.3567700674.

The spelling of 749496091 in words is "seven hundred forty-nine million, four hundred ninety-six thousand, ninety-one".