91039741 has 4 divisors (see below), whose sum is σ = 98042812. Its totient is φ = 84036672.

The previous prime is 91039733. The next prime is 91039757. The reversal of 91039741 is 14793019.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59444100 + 31595641 = 7710^2 + 5621^2 .

It is a cyclic number.

It is not a de Polignac number, because 91039741 - 2³ = 91039733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91039697 and 91039706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91039441) 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, 3501516 + ... + 3501541.

It is an arithmetic number, because the mean of its divisors is an integer number (24510703).

Almost surely, 2^91039741 is an apocalyptic number.

It is an amenable number.

91039741 is a deficient number, since it is larger than the sum of its proper divisors (7003071).

91039741 is a wasteful number, since it uses less digits than its factorization.

91039741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7003070.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 91039741 is about 9541.4747811856. The cubic root of 91039741 is about 449.8596121744.

The spelling of 91039741 in words is "ninety-one million, thirty-nine thousand, seven hundred forty-one".