40394960 has 20 divisors (see below), whose sum is σ = 93918468. Its totient is φ = 16157952.

The previous prime is 40394947. The next prime is 40394983. The reversal of 40394960 is 6949304.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20539024 + 19855936 = 4532^2 + 4456^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 40394960.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252389 + ... + 252548.

Almost surely, 2^40394960 is an apocalyptic number.

40394960 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40394960 is an abundant number, since it is smaller than the sum of its proper divisors (53523508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40394960 is a wasteful number, since it uses less digits than its factorization.

40394960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504950 (or 504944 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 40394960 is about 6355.7029508938. The cubic root of 40394960 is about 343.1171249007.

The spelling of 40394960 in words is "forty million, three hundred ninety-four thousand, nine hundred sixty".