40348389 has 32 divisors (see below), whose sum is σ = 57674880. Its totient is φ = 25056000.

The previous prime is 40348379. The next prime is 40348409. The reversal of 40348389 is 98384304.

It is not a de Polignac number, because 40348389 - 2⁷ = 40348261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40348379) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 399439 + ... + 399539.

It is an arithmetic number, because the mean of its divisors is an integer number (1802340).

Almost surely, 2^40348389 is an apocalyptic number.

It is an amenable number.

40348389 is a deficient number, since it is larger than the sum of its proper divisors (17326491).

40348389 is a wasteful number, since it uses less digits than its factorization.

40348389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261.

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 40348389 is about 6352.0381768374. The cubic root of 40348389 is about 342.9852152733.

The spelling of 40348389 in words is "forty million, three hundred forty-eight thousand, three hundred eighty-nine".