40401213446 has 12 divisors (see below), whose sum is σ = 66611918436. Its totient is φ = 18364187820.

The previous prime is 40401213443. The next prime is 40401213469. The reversal of 40401213446 is 64431210404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40401213443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 83473340 + ... + 83473823.

It is an arithmetic number, because the mean of its divisors is an integer number (5550993203).

Almost surely, 2^40401213446 is an apocalyptic number.

40401213446 is a deficient number, since it is larger than the sum of its proper divisors (26210704990).

40401213446 is a wasteful number, since it uses less digits than its factorization.

40401213446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166947187 (or 166947176 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The spelling of 40401213446 in words is "forty billion, four hundred one million, two hundred thirteen thousand, four hundred forty-six".