91429619 has 2 divisors, whose sum is σ = 91429620. Its totient is φ = 91429618.

The previous prime is 91429589. The next prime is 91429651. The reversal of 91429619 is 91692419.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91429619 is a prime.

It is a super-2 number, since 2×91429619² = 16718750460970322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (91429319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45714809 + 45714810.

It is an arithmetic number, because the mean of its divisors is an integer number (45714810).

Almost surely, 2^91429619 is an apocalyptic number.

91429619 is a deficient number, since it is larger than the sum of its proper divisors (1).

91429619 is an equidigital number, since it uses as much as digits as its factorization.

91429619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 41.

The square root of 91429619 is about 9561.8836533394. The cubic root of 91429619 is about 450.5008727491.

The spelling of 91429619 in words is "ninety-one million, four hundred twenty-nine thousand, six hundred nineteen".