91402691 has 8 divisors (see below), whose sum is σ = 93992544. Its totient is φ = 88819200.

The previous prime is 91402679. The next prime is 91402699. The reversal of 91402691 is 19620419.

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 91402691 - 2⁶ = 91402627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91402699) 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, 56291 + ... + 57891.

It is an arithmetic number, because the mean of its divisors is an integer number (11749068).

Almost surely, 2^91402691 is an apocalyptic number.

91402691 is a deficient number, since it is larger than the sum of its proper divisors (2589853).

91402691 is a wasteful number, since it uses less digits than its factorization.

91402691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3181.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 91402691 is about 9560.4754588880. The cubic root of 91402691 is about 450.4566409900.

The spelling of 91402691 in words is "ninety-one million, four hundred two thousand, six hundred ninety-one".