40398843474 has 40 divisors (see below), whose sum is σ = 98752732848. Its totient is φ = 12242073240.

The previous prime is 40398843427. The next prime is 40398843479. The reversal of 40398843474 is 47434889304.

40398843474 is a `hidden beast` number, since 4 + 0 + 3 + 98 + 84 + 3 + 474 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 40398843474.

It is not an unprimeable number, because it can be changed into a prime (40398843479) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11333472 + ... + 11337035.

Almost surely, 2^40398843474 is an apocalyptic number.

40398843474 is an abundant number, since it is smaller than the sum of its proper divisors (58353889374).

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

40398843474 is a wasteful number, since it uses less digits than its factorization.

40398843474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22670532 (or 22670523 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 54.

The spelling of 40398843474 in words is "forty billion, three hundred ninety-eight million, eight hundred forty-three thousand, four hundred seventy-four".