40442347 has 4 divisors (see below), whose sum is σ = 44118936. Its totient is φ = 36765760.

The previous prime is 40442341. The next prime is 40442351. The reversal of 40442347 is 74324404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40442347 - 2¹⁹ = 39918059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40442341) 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, 1838278 + ... + 1838299.

It is an arithmetic number, because the mean of its divisors is an integer number (11029734).

Almost surely, 2^40442347 is an apocalyptic number.

40442347 is a deficient number, since it is larger than the sum of its proper divisors (3676589).

40442347 is a wasteful number, since it uses less digits than its factorization.

40442347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3676588.

The product of its (nonzero) digits is 10752, while the sum is 28.

The square root of 40442347 is about 6359.4297700344. The cubic root of 40442347 is about 343.2512417761.

The spelling of 40442347 in words is "forty million, four hundred forty-two thousand, three hundred forty-seven".