140949889 has 4 divisors (see below), whose sum is σ = 145810260. Its totient is φ = 136089520.

The previous prime is 140949883. The next prime is 140949917. The reversal of 140949889 is 988949041.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 94478400 + 46471489 = 9720^2 + 6817^2 .

It is a cyclic number.

It is not a de Polignac number, because 140949889 - 2⁵ = 140949857 is a prime.

It is a super-2 number, since 2×140949889² = 39733742418224642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140949883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2430142 + ... + 2430199.

It is an arithmetic number, because the mean of its divisors is an integer number (36452565).

Almost surely, 2^140949889 is an apocalyptic number.

It is an amenable number.

140949889 is a deficient number, since it is larger than the sum of its proper divisors (4860371).

140949889 is an equidigital number, since it uses as much as digits as its factorization.

140949889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4860370.

The product of its (nonzero) digits is 746496, while the sum is 52.

The square root of 140949889 is about 11872.2318457820. The cubic root of 140949889 is about 520.4211196649.

The spelling of 140949889 in words is "one hundred forty million, nine hundred forty-nine thousand, eight hundred eighty-nine".