91379803 has 2 divisors, whose sum is σ = 91379804. Its totient is φ = 91379802.

The previous prime is 91379789. The next prime is 91379831. The reversal of 91379803 is 30897319.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91379803 is a prime.

It is not a weakly prime, because it can be changed into another prime (91379843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45689901 + 45689902.

It is an arithmetic number, because the mean of its divisors is an integer number (45689902).

Almost surely, 2^91379803 is an apocalyptic number.

91379803 is a deficient number, since it is larger than the sum of its proper divisors (1).

91379803 is an equidigital number, since it uses as much as digits as its factorization.

91379803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 91379803 is about 9559.2783723459. The cubic root of 91379803 is about 450.4190384783.

It can be divided in two parts, 91379 and 803, that multiplied together give a palindrome (73377337).

The spelling of 91379803 in words is "ninety-one million, three hundred seventy-nine thousand, eight hundred three".