40394152 has 32 divisors (see below), whose sum is σ = 80085600. Its totient is φ = 19047744.

The previous prime is 40394131. The next prime is 40394153. The reversal of 40394152 is 25149304.

It is a self number, because there is not a number n which added to its sum of digits gives 40394152.

It is not an unprimeable number, because it can be changed into a prime (40394153) 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, 44083 + ... + 44989.

It is an arithmetic number, because the mean of its divisors is an integer number (2502675).

Almost surely, 2^40394152 is an apocalyptic number.

It is an amenable number.

40394152 is a deficient number, since it is larger than the sum of its proper divisors (39691448).

40394152 is a wasteful number, since it uses less digits than its factorization.

40394152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225 (or 1221 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 40394152 is about 6355.6393856165. The cubic root of 40394152 is about 343.1148371525.

The spelling of 40394152 in words is "forty million, three hundred ninety-four thousand, one hundred fifty-two".