139993798 has 16 divisors (see below), whose sum is σ = 240143904. Its totient is φ = 59958720.

The previous prime is 139993781. The next prime is 139993877. The reversal of 139993798 is 897399931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34728 + ... + 38548.

It is an arithmetic number, because the mean of its divisors is an integer number (15008994).

Almost surely, 2^139993798 is an apocalyptic number.

139993798 is a deficient number, since it is larger than the sum of its proper divisors (100150106).

139993798 is a wasteful number, since it uses less digits than its factorization.

139993798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6447.

The product of its digits is 3306744, while the sum is 58.

The square root of 139993798 is about 11831.8974809622. The cubic root of 139993798 is about 519.2417424889.

The spelling of 139993798 in words is "one hundred thirty-nine million, nine hundred ninety-three thousand, seven hundred ninety-eight".