140477819 has 2 divisors, whose sum is σ = 140477820. Its totient is φ = 140477818.

The previous prime is 140477759. The next prime is 140477837. The reversal of 140477819 is 918774041.

It is a strong prime.

It is an emirp because it is prime and its reverse (918774041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140477819 is a prime.

It is a super-2 number, since 2×140477819² = 39468035261993522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140477899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70238909 + 70238910.

It is an arithmetic number, because the mean of its divisors is an integer number (70238910).

Almost surely, 2^140477819 is an apocalyptic number.

140477819 is a deficient number, since it is larger than the sum of its proper divisors (1).

140477819 is an equidigital number, since it uses as much as digits as its factorization.

140477819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 140477819 is about 11852.3339051851. Note that the first 3 decimals coincide. The cubic root of 140477819 is about 519.8394709117.

The spelling of 140477819 in words is "one hundred forty million, four hundred seventy-seven thousand, eight hundred nineteen".