140561949 has 24 divisors (see below), whose sum is σ = 207692800. Its totient is φ = 84490560.

The previous prime is 140561929. The next prime is 140561951. The reversal of 140561949 is 949165041.

It is not a de Polignac number, because 140561949 - 2⁵ = 140561917 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 (140561929) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44577 + ... + 47625.

Almost surely, 2^140561949 is an apocalyptic number.

It is an amenable number.

140561949 is a deficient number, since it is larger than the sum of its proper divisors (67130851).

140561949 is a wasteful number, since it uses less digits than its factorization.

140561949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3201 (or 3190 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 140561949 is about 11855.8824639923. The cubic root of 140561949 is about 519.9432248171.

The spelling of 140561949 in words is "one hundred forty million, five hundred sixty-one thousand, nine hundred forty-nine".