139416450 has 48 divisors (see below), whose sum is σ = 348965760. Its totient is φ = 36832320.

The previous prime is 139416437. The next prime is 139416457. The reversal of 139416450 is 54614931.

It is a super-3 number, since 3×139416450³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (139416457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12087 + ... + 20613.

It is an arithmetic number, because the mean of its divisors is an integer number (7270120).

Almost surely, 2^139416450 is an apocalyptic number.

139416450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 139416450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174482880).

139416450 is an abundant number, since it is smaller than the sum of its proper divisors (209549310).

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

139416450 is a wasteful number, since it uses less digits than its factorization.

139416450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8651 (or 8646 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 139416450 is about 11807.4743277299. The cubic root of 139416450 is about 518.5269578716.

The spelling of 139416450 in words is "one hundred thirty-nine million, four hundred sixteen thousand, four hundred fifty".