139223700 has 432 divisors, whose sum is σ = 568713600. Its totient is φ = 28224000.

The previous prime is 139223699. The next prime is 139223701. The reversal of 139223700 is 7322931.

It is an interprime number because it is at equal distance from previous prime (139223699) and next prime (139223701).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139223701) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3395680 + ... + 3395720.

Almost surely, 2^139223700 is an apocalyptic number.

139223700 is a gapful number since it is divisible by the number (10) 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 139223700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284356800).

139223700 is an abundant number, since it is smaller than the sum of its proper divisors (429489900).

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

139223700 is a wasteful number, since it uses less digits than its factorization.

139223700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 139223700 is about 11799.3093018193. The cubic root of 139223700 is about 518.2878847765.

The spelling of 139223700 in words is "one hundred thirty-nine million, two hundred twenty-three thousand, seven hundred".