140436377 has 4 divisors (see below), whose sum is σ = 140464656. Its totient is φ = 140408100.

The previous prime is 140436347. The next prime is 140436407. The reversal of 140436377 is 773634041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 773634041 = 19919 ⋅38839.

It is an interprime number because it is at equal distance from previous prime (140436347) and next prime (140436407).

It is a cyclic number.

It is not a de Polignac number, because 140436377 - 2¹⁰ = 140435353 is a prime.

It is a super-2 number, since 2×140436377² = 39444751969772258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140436347) 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, 4499 + ... + 17352.

It is an arithmetic number, because the mean of its divisors is an integer number (35116164).

Almost surely, 2^140436377 is an apocalyptic number.

It is an amenable number.

140436377 is a deficient number, since it is larger than the sum of its proper divisors (28279).

140436377 is an equidigital number, since it uses as much as digits as its factorization.

140436377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28278.

The product of its (nonzero) digits is 42336, while the sum is 35.

The square root of 140436377 is about 11850.5855129610. The cubic root of 140436377 is about 519.7883470491.

The spelling of 140436377 in words is "one hundred forty million, four hundred thirty-six thousand, three hundred seventy-seven".