140399377 has 4 divisors (see below), whose sum is σ = 140423220. Its totient is φ = 140375536.

The previous prime is 140399327. The next prime is 140399407. The reversal of 140399377 is 773993041.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 140209281 + 190096 = 11841^2 + 436^2 .

It is a cyclic number.

It is not a de Polignac number, because 140399377 - 2¹¹ = 140397329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140399317) 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, 3999 + ... + 17227.

It is an arithmetic number, because the mean of its divisors is an integer number (35105805).

Almost surely, 2^140399377 is an apocalyptic number.

It is an amenable number.

140399377 is a deficient number, since it is larger than the sum of its proper divisors (23843).

140399377 is a wasteful number, since it uses less digits than its factorization.

140399377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23842.

The product of its (nonzero) digits is 142884, while the sum is 43.

The square root of 140399377 is about 11849.0243058237. The cubic root of 140399377 is about 519.7426944470.

The spelling of 140399377 in words is "one hundred forty million, three hundred ninety-nine thousand, three hundred seventy-seven".