40854009 has 48 divisors (see below), whose sum is σ = 69787008. Its totient is φ = 20749824.

The previous prime is 40854007. The next prime is 40854013. The reversal of 40854009 is 90045804.

It is not a de Polignac number, because 40854009 - 2¹ = 40854007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40854007) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 128719 + ... + 129035.

It is an arithmetic number, because the mean of its divisors is an integer number (1453896).

Almost surely, 2^40854009 is an apocalyptic number.

It is an amenable number.

40854009 is a deficient number, since it is larger than the sum of its proper divisors (28932999).

40854009 is a wasteful number, since it uses less digits than its factorization.

40854009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382 (or 363 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 40854009 is about 6391.7140893504. The cubic root of 40854009 is about 344.4119619463.

The spelling of 40854009 in words is "forty million, eight hundred fifty-four thousand, nine".