40442398 has 8 divisors (see below), whose sum is σ = 60878808. Its totient is φ = 20149464.

The previous prime is 40442377. The next prime is 40442407. The reversal of 40442398 is 89324404.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35161 + ... + 36292.

It is an arithmetic number, because the mean of its divisors is an integer number (7609851).

Almost surely, 2^40442398 is an apocalyptic number.

40442398 is a deficient number, since it is larger than the sum of its proper divisors (20436410).

40442398 is a wasteful number, since it uses less digits than its factorization.

40442398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71738.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 40442398 is about 6359.4337798266. The cubic root of 40442398 is about 343.2513860622.

The spelling of 40442398 in words is "forty million, four hundred forty-two thousand, three hundred ninety-eight".