140485391 has 4 divisors (see below), whose sum is σ = 141933792. Its totient is φ = 139036992.

The previous prime is 140485381. The next prime is 140485427. The reversal of 140485391 is 193584041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140485391 - 2¹⁰ = 140484367 is a prime.

It is a super-2 number, since 2×140485391² = 39472290168845762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140485321) 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, 724055 + ... + 724248.

It is an arithmetic number, because the mean of its divisors is an integer number (35483448).

Almost surely, 2^140485391 is an apocalyptic number.

140485391 is a deficient number, since it is larger than the sum of its proper divisors (1448401).

140485391 is an equidigital number, since it uses as much as digits as its factorization.

140485391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1448400.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 140485391 is about 11852.6533316384. The cubic root of 140485391 is about 519.8488108293.

The spelling of 140485391 in words is "one hundred forty million, four hundred eighty-five thousand, three hundred ninety-one".