139813406 has 16 divisors (see below), whose sum is σ = 222275664. Its totient is φ = 65729664.

The previous prime is 139813361. The next prime is 139813433. The reversal of 139813406 is 604318931.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67076 + ... + 69128.

It is an arithmetic number, because the mean of its divisors is an integer number (13892229).

Almost surely, 2^139813406 is an apocalyptic number.

139813406 is a deficient number, since it is larger than the sum of its proper divisors (82462258).

139813406 is a wasteful number, since it uses less digits than its factorization.

139813406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4075.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 139813406 is about 11824.2719014745. The cubic root of 139813406 is about 519.0186199440.

The spelling of 139813406 in words is "one hundred thirty-nine million, eight hundred thirteen thousand, four hundred six".