139224450 has 24 divisors (see below), whose sum is σ = 345277008. Its totient is φ = 37126480.

The previous prime is 139224433. The next prime is 139224461. The reversal of 139224450 is 54422931.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 463932 + ... + 464231.

It is an arithmetic number, because the mean of its divisors is an integer number (14386542).

Almost surely, 2^139224450 is an apocalyptic number.

139224450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139224450 is an abundant number, since it is smaller than the sum of its proper divisors (206052558).

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

139224450 is a wasteful number, since it uses less digits than its factorization.

139224450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928178 (or 928173 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 139224450 is about 11799.3410832978. The cubic root of 139224450 is about 518.2888154495.

The spelling of 139224450 in words is "one hundred thirty-nine million, two hundred twenty-four thousand, four hundred fifty".