40373189 has 4 divisors (see below), whose sum is σ = 40644300. Its totient is φ = 40102080.

The previous prime is 40373171. The next prime is 40373197. The reversal of 40373189 is 98137304.

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

It can be written as a sum of positive squares in 2 ways, for example, as 24108100 + 16265089 = 4910^2 + 4033^2 .

It is a cyclic number.

It is not a de Polignac number, because 40373189 - 2¹⁶ = 40307653 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 (40373149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135332 + ... + 135629.

It is an arithmetic number, because the mean of its divisors is an integer number (10161075).

Almost surely, 2^40373189 is an apocalyptic number.

It is an amenable number.

40373189 is a deficient number, since it is larger than the sum of its proper divisors (271111).

40373189 is a wasteful number, since it uses less digits than its factorization.

40373189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271110.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 40373189 is about 6353.9900062874. The cubic root of 40373189 is about 343.0554724460.

The spelling of 40373189 in words is "forty million, three hundred seventy-three thousand, one hundred eighty-nine".