140464439388 has 576 divisors, whose sum is σ = 477023232000. Its totient is φ = 35480954880.

The previous prime is 140464439341. The next prime is 140464439407. The reversal of 140464439388 is 883934464041.

140464439388 is a `hidden beast` number, since 14 + 0 + 464 + 4 + 3 + 93 + 88 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1448086956 + ... + 1448087052.

Almost surely, 2^140464439388 is an apocalyptic number.

140464439388 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140464439388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238511616000).

140464439388 is an abundant number, since it is smaller than the sum of its proper divisors (336558792612).

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

140464439388 is a wasteful number, since it uses less digits than its factorization.

140464439388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272 (or 153 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 54.

The spelling of 140464439388 in words is "one hundred forty billion, four hundred sixty-four million, four hundred thirty-nine thousand, three hundred eighty-eight".