139829440 has 28 divisors (see below), whose sum is σ = 332969616. Its totient is φ = 55931648.

The previous prime is 139829407. The next prime is 139829449. The reversal of 139829440 is 44928931.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 139829393 and 139829402.

It is not an unprimeable number, because it can be changed into a prime (139829449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218164 + ... + 218803.

It is an arithmetic number, because the mean of its divisors is an integer number (11891772).

Almost surely, 2^139829440 is an apocalyptic number.

139829440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139829440 is an abundant number, since it is smaller than the sum of its proper divisors (193140176).

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

139829440 is an equidigital number, since it uses as much as digits as its factorization.

139829440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436984 (or 436974 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 139829440 is about 11824.9498941856. The cubic root of 139829440 is about 519.0384597831.

The spelling of 139829440 in words is "one hundred thirty-nine million, eight hundred twenty-nine thousand, four hundred forty".