139001919 has 8 divisors (see below), whose sum is σ = 211812480. Its totient is φ = 79429656.

The previous prime is 139001917. The next prime is 139001953. The reversal of 139001919 is 919100931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 139001919 - 2¹ = 139001917 is a prime.

It is a super-2 number, since 2×139001919² = 38643066971365122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 139001919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139001917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3309549 + ... + 3309590.

It is an arithmetic number, because the mean of its divisors is an integer number (26476560).

Almost surely, 2^139001919 is an apocalyptic number.

139001919 is a deficient number, since it is larger than the sum of its proper divisors (72810561).

139001919 is an equidigital number, since it uses as much as digits as its factorization.

139001919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6619149.

The product of its (nonzero) digits is 2187, while the sum is 33.

The square root of 139001919 is about 11789.9075059985. The cubic root of 139001919 is about 518.0125305675.

The spelling of 139001919 in words is "one hundred thirty-nine million, one thousand, nine hundred nineteen".