91954489 has 4 divisors (see below), whose sum is σ = 100314000. Its totient is φ = 83594980.

The previous prime is 91954487. The next prime is 91954501. The reversal of 91954489 is 98445919.

It is a happy number.

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 91954489 - 2¹ = 91954487 is a prime.

It is a super-2 number, since 2×91954489² = 16911256094502242, which contains 22 as substring.

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 (91954481) 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, 4179739 + ... + 4179760.

It is an arithmetic number, because the mean of its divisors is an integer number (25078500).

Almost surely, 2^91954489 is an apocalyptic number.

It is an amenable number.

91954489 is a deficient number, since it is larger than the sum of its proper divisors (8359511).

91954489 is a wasteful number, since it uses less digits than its factorization.

91954489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8359510.

The product of its digits is 466560, while the sum is 49.

The square root of 91954489 is about 9589.2903282777. The cubic root of 91954489 is about 451.3612918051.

The spelling of 91954489 in words is "ninety-one million, nine hundred fifty-four thousand, four hundred eighty-nine".