139104769 has 4 divisors (see below), whose sum is σ = 139503700. Its totient is φ = 138705840.

The previous prime is 139104767. The next prime is 139104799. The reversal of 139104769 is 967401931.

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

It can be written as a sum of positive squares in 2 ways, for example, as 123988225 + 15116544 = 11135^2 + 3888^2 .

It is a cyclic number.

It is not a de Polignac number, because 139104769 - 2¹ = 139104767 is a prime.

It is a super-2 number, since 2×139104769² = 38700273517086722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139104767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198942 + ... + 199639.

It is an arithmetic number, because the mean of its divisors is an integer number (34875925).

Almost surely, 2^139104769 is an apocalyptic number.

It is an amenable number.

139104769 is a deficient number, since it is larger than the sum of its proper divisors (398931).

139104769 is an equidigital number, since it uses as much as digits as its factorization.

139104769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398930.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 139104769 is about 11794.2684809190. The cubic root of 139104769 is about 518.1402613073.

The spelling of 139104769 in words is "one hundred thirty-nine million, one hundred four thousand, seven hundred sixty-nine".