140619887 has 4 divisors (see below), whose sum is σ = 140718120. Its totient is φ = 140521656.

The previous prime is 140619883. The next prime is 140619889. The reversal of 140619887 is 788916041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140619887 - 2² = 140619883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140619883) 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, 46937 + ... + 49842.

It is an arithmetic number, because the mean of its divisors is an integer number (35179530).

Almost surely, 2^140619887 is an apocalyptic number.

140619887 is a deficient number, since it is larger than the sum of its proper divisors (98233).

140619887 is an equidigital number, since it uses as much as digits as its factorization.

140619887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98232.

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 140619887 is about 11858.3256406628. The cubic root of 140619887 is about 520.0146531867.

The spelling of 140619887 in words is "one hundred forty million, six hundred nineteen thousand, eight hundred eighty-seven".