91421741 has 4 divisors (see below), whose sum is σ = 93547872. Its totient is φ = 89295612.

The previous prime is 91421731. The next prime is 91421791. The reversal of 91421741 is 14712419.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 91421741 - 2¹⁴ = 91405357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91421731) 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, 1063001 + ... + 1063086.

It is an arithmetic number, because the mean of its divisors is an integer number (23386968).

Almost surely, 2^91421741 is an apocalyptic number.

It is an amenable number.

91421741 is a deficient number, since it is larger than the sum of its proper divisors (2126131).

91421741 is a wasteful number, since it uses less digits than its factorization.

91421741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126130.

The product of its digits is 2016, while the sum is 29.

The square root of 91421741 is about 9561.4716963447. The cubic root of 91421741 is about 450.4879332960.

The spelling of 91421741 in words is "ninety-one million, four hundred twenty-one thousand, seven hundred forty-one".