140269777 has 2 divisors, whose sum is σ = 140269778. Its totient is φ = 140269776.

The previous prime is 140269769. The next prime is 140269859. The reversal of 140269777 is 777962041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95433361 + 44836416 = 9769^2 + 6696^2 .

It is a cyclic number.

It is not a de Polignac number, because 140269777 - 2³ = 140269769 is a prime.

It is a super-2 number, since 2×140269777² = 39351220679259458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (140269757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70134888 + 70134889.

It is an arithmetic number, because the mean of its divisors is an integer number (70134889).

Almost surely, 2^140269777 is an apocalyptic number.

It is an amenable number.

140269777 is a deficient number, since it is larger than the sum of its proper divisors (1).

140269777 is an equidigital number, since it uses as much as digits as its factorization.

140269777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 148176, while the sum is 43.

The square root of 140269777 is about 11843.5542384877. The cubic root of 140269777 is about 519.5827236763.

The spelling of 140269777 in words is "one hundred forty million, two hundred sixty-nine thousand, seven hundred seventy-seven".