139214405 has 8 divisors (see below), whose sum is σ = 182244384. Its totient is φ = 101246800.

The previous prime is 139214399. The next prime is 139214407. The reversal of 139214405 is 504412931.

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

It is not a de Polignac number, because 139214405 - 2¹⁴ = 139198021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139214407) 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, 1265531 + ... + 1265640.

It is an arithmetic number, because the mean of its divisors is an integer number (22780548).

Almost surely, 2^139214405 is an apocalyptic number.

It is an amenable number.

139214405 is a deficient number, since it is larger than the sum of its proper divisors (43029979).

139214405 is a wasteful number, since it uses less digits than its factorization.

139214405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2531187.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 139214405 is about 11798.9154162575. The cubic root of 139214405 is about 518.2763503583.

The spelling of 139214405 in words is "one hundred thirty-nine million, two hundred fourteen thousand, four hundred five".