139994964 has 72 divisors (see below), whose sum is σ = 378924000. Its totient is φ = 43447104.

The previous prime is 139994963. The next prime is 139995007. The reversal of 139994964 is 469499931.

It is a super-2 number, since 2×139994964² = 39197179890722592, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 139994964.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139994963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38622 + ... + 42090.

Almost surely, 2^139994964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139994964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189462000).

139994964 is an abundant number, since it is smaller than the sum of its proper divisors (238929036).

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

139994964 is a wasteful number, since it uses less digits than its factorization.

139994964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3557 (or 3552 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 54.

The square root of 139994964 is about 11831.9467544441. The cubic root of 139994964 is about 519.2431840628.

The spelling of 139994964 in words is "one hundred thirty-nine million, nine hundred ninety-four thousand, nine hundred sixty-four".