139344469 has 8 divisors (see below), whose sum is σ = 152171712. Its totient is φ = 126543840.

The previous prime is 139344463. The next prime is 139344487. The reversal of 139344469 is 964443931.

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

It is a cyclic number.

It is not a de Polignac number, because 139344469 - 2⁵ = 139344437 is a prime.

It is a super-2 number, since 2×139344469² = 38833762081783922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139344463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5232 + ... + 17494.

It is an arithmetic number, because the mean of its divisors is an integer number (19021464).

Almost surely, 2^139344469 is an apocalyptic number.

It is an amenable number.

139344469 is a deficient number, since it is larger than the sum of its proper divisors (12827243).

139344469 is a wasteful number, since it uses less digits than its factorization.

139344469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13307.

The product of its digits is 279936, while the sum is 43.

The square root of 139344469 is about 11804.4258225464. The cubic root of 139344469 is about 518.4377036640.

The spelling of 139344469 in words is "one hundred thirty-nine million, three hundred forty-four thousand, four hundred sixty-nine".