91929401 has 8 divisors (see below), whose sum is σ = 94529160. Its totient is φ = 89361792.

The previous prime is 91929373. The next prime is 91929403. The reversal of 91929401 is 10492919.

It can be written as a sum of positive squares in 4 ways, for example, as 45212176 + 46717225 = 6724^2 + 6835^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91929401 - 2⁶ = 91929337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91929403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2180 + ... + 13733.

It is an arithmetic number, because the mean of its divisors is an integer number (11816145).

Almost surely, 2^91929401 is an apocalyptic number.

It is an amenable number.

91929401 is a deficient number, since it is larger than the sum of its proper divisors (2599759).

91929401 is a wasteful number, since it uses less digits than its factorization.

91929401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16075.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 91929401 is about 9587.9821130413. The cubic root of 91929401 is about 451.3202396782.

The spelling of 91929401 in words is "ninety-one million, nine hundred twenty-nine thousand, four hundred one".