139553499 has 16 divisors (see below), whose sum is σ = 196188800. Its totient is φ = 87993216.

The previous prime is 139553483. The next prime is 139553503. The reversal of 139553499 is 994355931.

139553499 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 139553499 - 2⁴ = 139553483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139553419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40467 + ... + 43779.

It is an arithmetic number, because the mean of its divisors is an integer number (12261800).

Almost surely, 2^139553499 is an apocalyptic number.

139553499 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

139553499 is a deficient number, since it is larger than the sum of its proper divisors (56635301).

139553499 is a wasteful number, since it uses less digits than its factorization.

139553499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4074.

The product of its digits is 656100, while the sum is 48.

The square root of 139553499 is about 11813.2763871840. The cubic root of 139553499 is about 518.6968094879.

The spelling of 139553499 in words is "one hundred thirty-nine million, five hundred fifty-three thousand, four hundred ninety-nine".