140940813 has 8 divisors (see below), whose sum is σ = 202376608. Its totient is φ = 86732784.

The previous prime is 140940809. The next prime is 140940817. The reversal of 140940813 is 318049041.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (140940809) and next prime (140940817).

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

It is not a de Polignac number, because 140940813 - 2² = 140940809 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 (140940817) 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, 1806895 + ... + 1806972.

It is an arithmetic number, because the mean of its divisors is an integer number (25297076).

Almost surely, 2^140940813 is an apocalyptic number.

140940813 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

140940813 is a deficient number, since it is larger than the sum of its proper divisors (61435795).

140940813 is a wasteful number, since it uses less digits than its factorization.

140940813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3613883.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 140940813 is about 11871.8496031579. The cubic root of 140940813 is about 520.4099491619.

Adding to 140940813 its reverse (318049041), we get a palindrome (458989854).

The spelling of 140940813 in words is "one hundred forty million, nine hundred forty thousand, eight hundred thirteen".