140049645 has 32 divisors (see below), whose sum is σ = 239549184. Its totient is φ = 69696000.

The previous prime is 140049641. The next prime is 140049653. The reversal of 140049645 is 546940041.

It is not a de Polignac number, because 140049645 - 2² = 140049641 is a prime.

It is a super-3 number, since 3×140049645³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140049641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9195 + ... + 19095.

It is an arithmetic number, because the mean of its divisors is an integer number (7485912).

Almost surely, 2^140049645 is an apocalyptic number.

140049645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140049645 is a deficient number, since it is larger than the sum of its proper divisors (99499539).

140049645 is a wasteful number, since it uses less digits than its factorization.

140049645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9973.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 140049645 is about 11834.2572643998. The cubic root of 140049645 is about 519.3107794483.

Adding to 140049645 its reverse (546940041), we get a palindrome (686989686).

The spelling of 140049645 in words is "one hundred forty million, forty-nine thousand, six hundred forty-five".