40552399 has 8 divisors (see below), whose sum is σ = 41545728. Its totient is φ = 39564600.

The previous prime is 40552357. The next prime is 40552417. The reversal of 40552399 is 99325504.

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

It is not a de Polignac number, because 40552399 - 2⁹ = 40551887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40552349) 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, 16074 + ... + 18424.

It is an arithmetic number, because the mean of its divisors is an integer number (5193216).

Almost surely, 2^40552399 is an apocalyptic number.

40552399 is a deficient number, since it is larger than the sum of its proper divisors (993329).

40552399 is a wasteful number, since it uses less digits than its factorization.

40552399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2765.

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 40552399 is about 6368.0765541881. The cubic root of 40552399 is about 343.5623123510.

The spelling of 40552399 in words is "forty million, five hundred fifty-two thousand, three hundred ninety-nine".