91303397 has 8 divisors (see below), whose sum is σ = 96002040. Its totient is φ = 86708160.

The previous prime is 91303391. The next prime is 91303411. The reversal of 91303397 is 79330319.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 81796 + 91221601 = 286^2 + 9551^2 .

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 91303397 - 2¹² = 91299301 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 (91303391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24038 + ... + 27575.

It is an arithmetic number, because the mean of its divisors is an integer number (12000255).

Almost surely, 2^91303397 is an apocalyptic number.

It is an amenable number.

91303397 is a deficient number, since it is larger than the sum of its proper divisors (4698643).

91303397 is a wasteful number, since it uses less digits than its factorization.

91303397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51703.

The product of its (nonzero) digits is 15309, while the sum is 35.

The square root of 91303397 is about 9555.2811052318. The cubic root of 91303397 is about 450.2934661884.

The spelling of 91303397 in words is "ninety-one million, three hundred three thousand, three hundred ninety-seven".