139806453 has 8 divisors (see below), whose sum is σ = 197373888. Its totient is φ = 87721664.

The previous prime is 139806439. The next prime is 139806467. The reversal of 139806453 is 354608931.

139806453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (139806439) and next prime (139806467).

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 139806453 - 2⁴ = 139806437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139806413) 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, 1370601 + ... + 1370702.

It is an arithmetic number, because the mean of its divisors is an integer number (24671736).

Almost surely, 2^139806453 is an apocalyptic number.

It is an amenable number.

139806453 is a deficient number, since it is larger than the sum of its proper divisors (57567435).

139806453 is a wasteful number, since it uses less digits than its factorization.

139806453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2741323.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 139806453 is about 11823.9778839441. The cubic root of 139806453 is about 519.0100161045.

The spelling of 139806453 in words is "one hundred thirty-nine million, eight hundred six thousand, four hundred fifty-three".