91457429 has 16 divisors (see below), whose sum is σ = 107627520. Its totient is φ = 76083840.

The previous prime is 91457423. The next prime is 91457437. The reversal of 91457429 is 92475419.

It is not a de Polignac number, because 91457429 - 2¹² = 91453333 is a prime.

It is a super-2 number, since 2×91457429² = 16728922638580082, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91457423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63287 + ... + 64715.

It is an arithmetic number, because the mean of its divisors is an integer number (6726720).

Almost surely, 2^91457429 is an apocalyptic number.

It is an amenable number.

91457429 is a deficient number, since it is larger than the sum of its proper divisors (16170091).

91457429 is a wasteful number, since it uses less digits than its factorization.

91457429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700.

The product of its digits is 90720, while the sum is 41.

The square root of 91457429 is about 9563.3377541526. The cubic root of 91457429 is about 450.5465441606.

The spelling of 91457429 in words is "ninety-one million, four hundred fifty-seven thousand, four hundred twenty-nine".