40389190 has 16 divisors (see below), whose sum is σ = 73006560. Its totient is φ = 16087680.

The previous prime is 40389149. The next prime is 40389191. The reversal of 40389190 is 9198304.

It is a super-2 number, since 2×40389190² = 3262573337712200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40389191) 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, 5970 + ... + 10789.

It is an arithmetic number, because the mean of its divisors is an integer number (4562910).

Almost surely, 2^40389190 is an apocalyptic number.

40389190 is a deficient number, since it is larger than the sum of its proper divisors (32617370).

40389190 is a wasteful number, since it uses less digits than its factorization.

40389190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17007.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 40389190 is about 6355.2490116438. The cubic root of 40389190 is about 343.1007872183.

The spelling of 40389190 in words is "forty million, three hundred eighty-nine thousand, one hundred ninety".