40046442440 has 64 divisors (see below), whose sum is σ = 90468958320. Its totient is φ = 15953920000.

The previous prime is 40046442437. The next prime is 40046442473. The reversal of 40046442440 is 4424464004.

40046442440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 36289488004 + 3756954436 = 190498^2 + 61294^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40046442397 and 40046442406.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13167320 + ... + 13170360.

Almost surely, 2^40046442440 is an apocalyptic number.

40046442440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40046442440 is an abundant number, since it is smaller than the sum of its proper divisors (50422515880).

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

40046442440 is a wasteful number, since it uses less digits than its factorization.

40046442440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4274 (or 4270 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 32.

The spelling of 40046442440 in words is "forty billion, forty-six million, four hundred forty-two thousand, four hundred forty".