91420441 has 32 divisors (see below), whose sum is σ = 116640000. Its totient is φ = 69844992.

The previous prime is 91420409. The next prime is 91420471. The reversal of 91420441 is 14402419.

It is not a de Polignac number, because 91420441 - 2⁵ = 91420409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91420471) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 203385 + ... + 203833.

It is an arithmetic number, because the mean of its divisors is an integer number (3645000).

Almost surely, 2^91420441 is an apocalyptic number.

It is an amenable number.

91420441 is a deficient number, since it is larger than the sum of its proper divisors (25219559).

91420441 is a wasteful number, since it uses less digits than its factorization.

91420441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 91420441 is about 9561.4037149364. The cubic root of 91420441 is about 450.4857980013.

The spelling of 91420441 in words is "ninety-one million, four hundred twenty thousand, four hundred forty-one".