140977547 has 4 divisors (see below), whose sum is σ = 141396216. Its totient is φ = 140558880.

The previous prime is 140977537. The next prime is 140977561. The reversal of 140977547 is 745779041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 745779041 = 7 ⋅106539863.

It is a cyclic number.

It is not a de Polignac number, because 140977547 - 2⁴ = 140977531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140977498 and 140977507.

It is not an unprimeable number, because it can be changed into a prime (140977537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208829 + ... + 209502.

It is an arithmetic number, because the mean of its divisors is an integer number (35349054).

Almost surely, 2^140977547 is an apocalyptic number.

140977547 is a deficient number, since it is larger than the sum of its proper divisors (418669).

140977547 is an equidigital number, since it uses as much as digits as its factorization.

140977547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418668.

The product of its (nonzero) digits is 246960, while the sum is 44.

The square root of 140977547 is about 11873.3966075424. The cubic root of 140977547 is about 520.4551574496.

The spelling of 140977547 in words is "one hundred forty million, nine hundred seventy-seven thousand, five hundred forty-seven".