140699491 has 2 divisors, whose sum is σ = 140699492. Its totient is φ = 140699490.

The previous prime is 140699473. The next prime is 140699513. The reversal of 140699491 is 194996041.

It is a happy number.

140699491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140699491 - 2⁹ = 140698979 is a prime.

It is not a weakly prime, because it can be changed into another prime (140699401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70349745 + 70349746.

It is an arithmetic number, because the mean of its divisors is an integer number (70349746).

Almost surely, 2^140699491 is an apocalyptic number.

140699491 is a deficient number, since it is larger than the sum of its proper divisors (1).

140699491 is an equidigital number, since it uses as much as digits as its factorization.

140699491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 140699491 is about 11861.6816261439. The cubic root of 140699491 is about 520.1127603098.

The spelling of 140699491 in words is "one hundred forty million, six hundred ninety-nine thousand, four hundred ninety-one".