40398394 has 8 divisors (see below), whose sum is σ = 62552448. Its totient is φ = 19547580.

The previous prime is 40398383. The next prime is 40398401. The reversal of 40398394 is 49389304.

40398394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325732 + ... + 325855.

It is an arithmetic number, because the mean of its divisors is an integer number (7819056).

Almost surely, 2^40398394 is an apocalyptic number.

40398394 is a deficient number, since it is larger than the sum of its proper divisors (22154054).

40398394 is a wasteful number, since it uses less digits than its factorization.

40398394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651620.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 40398394 is about 6355.9730962300. The cubic root of 40398394 is about 343.1268474900.

The spelling of 40398394 in words is "forty million, three hundred ninety-eight thousand, three hundred ninety-four".