40352389 has 8 divisors (see below), whose sum is σ = 50309568. Its totient is φ = 31443360.

The previous prime is 40352381. The next prime is 40352393. The reversal of 40352389 is 98325304.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40352389 - 2³ = 40352381 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40352381) 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, 261952 + ... + 262105.

It is an arithmetic number, because the mean of its divisors is an integer number (6288696).

Almost surely, 2^40352389 is an apocalyptic number.

It is an amenable number.

40352389 is a deficient number, since it is larger than the sum of its proper divisors (9957179).

40352389 is a wasteful number, since it uses less digits than its factorization.

40352389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524075.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 40352389 is about 6352.3530286029. The cubic root of 40352389 is about 342.9965490222.

The spelling of 40352389 in words is "forty million, three hundred fifty-two thousand, three hundred eighty-nine".