40748189 has 4 divisors (see below), whose sum is σ = 40780224. Its totient is φ = 40716156.

The previous prime is 40748177. The next prime is 40748209. The reversal of 40748189 is 98184704.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40748189 - 2²⁰ = 39699613 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 (40748689) 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, 14027 + ... + 16680.

It is an arithmetic number, because the mean of its divisors is an integer number (10195056).

Almost surely, 2^40748189 is an apocalyptic number.

It is an amenable number.

40748189 is a deficient number, since it is larger than the sum of its proper divisors (32035).

40748189 is a wasteful number, since it uses less digits than its factorization.

40748189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32034.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 40748189 is about 6383.4308173583. The cubic root of 40748189 is about 344.1143396954.

The spelling of 40748189 in words is "forty million, seven hundred forty-eight thousand, one hundred eighty-nine".