140577869 has 2 divisors, whose sum is σ = 140577870. Its totient is φ = 140577868.

The previous prime is 140577851. The next prime is 140577887. The reversal of 140577869 is 968775041.

It is a balanced prime because it is at equal distance from previous prime (140577851) and next prime (140577887).

It can be written as a sum of positive squares in only one way, i.e., 88924900 + 51652969 = 9430^2 + 7187^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140577869 is a prime.

It is a super-2 number, since 2×140577869² = 39524274505162322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140577169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70288934 + 70288935.

It is an arithmetic number, because the mean of its divisors is an integer number (70288935).

Almost surely, 2^140577869 is an apocalyptic number.

It is an amenable number.

140577869 is a deficient number, since it is larger than the sum of its proper divisors (1).

140577869 is an equidigital number, since it uses as much as digits as its factorization.

140577869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 140577869 is about 11856.5538416523. The cubic root of 140577869 is about 519.9628536088.

The spelling of 140577869 in words is "one hundred forty million, five hundred seventy-seven thousand, eight hundred sixty-nine".