40239365946 has 64 divisors (see below), whose sum is σ = 87046880256. Its totient is φ = 12327552000.

The previous prime is 40239365861. The next prime is 40239365951. The reversal of 40239365946 is 64956393204.

It is a happy number.

It is a super-2 number, since 2×40239365946² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25678455 + ... + 25680021.

It is an arithmetic number, because the mean of its divisors is an integer number (1360107504).

Almost surely, 2^40239365946 is an apocalyptic number.

40239365946 is an abundant number, since it is smaller than the sum of its proper divisors (46807514310).

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

40239365946 is a wasteful number, since it uses less digits than its factorization.

40239365946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2807.

The product of its (nonzero) digits is 4199040, while the sum is 51.

The spelling of 40239365946 in words is "forty billion, two hundred thirty-nine million, three hundred sixty-five thousand, nine hundred forty-six".