139896254 has 4 divisors (see below), whose sum is σ = 209844384. Its totient is φ = 69948126.

The previous prime is 139896233. The next prime is 139896269. The reversal of 139896254 is 452698931.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 139896199 and 139896208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34974062 + ... + 34974065.

It is an arithmetic number, because the mean of its divisors is an integer number (52461096).

Almost surely, 2^139896254 is an apocalyptic number.

139896254 is a deficient number, since it is larger than the sum of its proper divisors (69948130).

139896254 is an equidigital number, since it uses as much as digits as its factorization.

139896254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69948129.

The product of its digits is 466560, while the sum is 47.

The square root of 139896254 is about 11827.7746850369. The cubic root of 139896254 is about 519.1211164673.

The spelling of 139896254 in words is "one hundred thirty-nine million, eight hundred ninety-six thousand, two hundred fifty-four".