136844457 has 8 divisors (see below), whose sum is σ = 190392384. Its totient is φ = 87263088.

The previous prime is 136844437. The next prime is 136844459. The reversal of 136844457 is 754448631.

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

It is not a de Polignac number, because 136844457 - 2¹⁰ = 136843433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136844459) 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, 991558 + ... + 991695.

It is an arithmetic number, because the mean of its divisors is an integer number (23799048).

Almost surely, 2^136844457 is an apocalyptic number.

It is an amenable number.

136844457 is a deficient number, since it is larger than the sum of its proper divisors (53547927).

136844457 is a wasteful number, since it uses less digits than its factorization.

136844457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1983279.

The product of its digits is 322560, while the sum is 42.

The square root of 136844457 is about 11698.0535560409. The cubic root of 136844457 is about 515.3185034543.

The spelling of 136844457 in words is "one hundred thirty-six million, eight hundred forty-four thousand, four hundred fifty-seven".