140389155 has 12 divisors (see below), whose sum is σ = 243341280. Its totient is φ = 74874192.

The previous prime is 140389153. The next prime is 140389169. The reversal of 140389155 is 551983041.

It is not a de Polignac number, because 140389155 - 2¹ = 140389153 is a prime.

It is a super-2 number, since 2×140389155² = 39418229683228050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140389153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1559835 + ... + 1559924.

It is an arithmetic number, because the mean of its divisors is an integer number (20278440).

Almost surely, 2^140389155 is an apocalyptic number.

140389155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

140389155 is a deficient number, since it is larger than the sum of its proper divisors (102952125).

140389155 is a wasteful number, since it uses less digits than its factorization.

140389155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3119770 (or 3119767 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 140389155 is about 11848.5929544398. The cubic root of 140389155 is about 519.7300805763.

The spelling of 140389155 in words is "one hundred forty million, three hundred eighty-nine thousand, one hundred fifty-five".