140794559 has 4 divisors (see below), whose sum is σ = 142110504. Its totient is φ = 139478616.

The previous prime is 140794531. The next prime is 140794567. The reversal of 140794559 is 955497041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 955497041 = 821 ⋅1163821.

It is a cyclic number.

It is not a de Polignac number, because 140794559 - 2¹⁶ = 140729023 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 (140794259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 657812 + ... + 658025.

It is an arithmetic number, because the mean of its divisors is an integer number (35527626).

Almost surely, 2^140794559 is an apocalyptic number.

140794559 is a deficient number, since it is larger than the sum of its proper divisors (1315945).

140794559 is a wasteful number, since it uses less digits than its factorization.

140794559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315944.

The product of its (nonzero) digits is 226800, while the sum is 44.

The square root of 140794559 is about 11865.6883070473. The cubic root of 140794559 is about 520.2298774061.

The spelling of 140794559 in words is "one hundred forty million, seven hundred ninety-four thousand, five hundred fifty-nine".