91349378 has 8 divisors (see below), whose sum is σ = 144235920. Its totient is φ = 43270740.

The previous prime is 91349371. The next prime is 91349383. The reversal of 91349378 is 87394319.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (91349371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1201928 + ... + 1202003.

It is an arithmetic number, because the mean of its divisors is an integer number (18029490).

Almost surely, 2^91349378 is an apocalyptic number.

91349378 is a deficient number, since it is larger than the sum of its proper divisors (52886542).

91349378 is a wasteful number, since it uses less digits than its factorization.

91349378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2403952.

The product of its digits is 163296, while the sum is 44.

The square root of 91349378 is about 9557.6868540458. The cubic root of 91349378 is about 450.3690437675.

The spelling of 91349378 in words is "ninety-one million, three hundred forty-nine thousand, three hundred seventy-eight".