139506467 has 4 divisors (see below), whose sum is σ = 140944776. Its totient is φ = 138068160.

The previous prime is 139506457. The next prime is 139506487. The reversal of 139506467 is 764605931.

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

It is a cyclic number.

It is not a de Polignac number, because 139506467 - 2¹² = 139502371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139506407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 719009 + ... + 719202.

It is an arithmetic number, because the mean of its divisors is an integer number (35236194).

Almost surely, 2^139506467 is an apocalyptic number.

139506467 is a deficient number, since it is larger than the sum of its proper divisors (1438309).

139506467 is an equidigital number, since it uses as much as digits as its factorization.

139506467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1438308.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 139506467 is about 11811.2855777853. The cubic root of 139506467 is about 518.6385329379.

The spelling of 139506467 in words is "one hundred thirty-nine million, five hundred six thousand, four hundred sixty-seven".