140049639 has 12 divisors (see below), whose sum is σ = 202474272. Its totient is φ = 93283200.

The previous prime is 140049619. The next prime is 140049641. The reversal of 140049639 is 936940041.

140049639 is a `hidden beast` number, since 14 + 0 + 0 + 4 + 9 + 639 = 666.

It is not a de Polignac number, because 140049639 - 2⁵ = 140049607 is a prime.

It is a super-2 number, since 2×140049639² = 39227802768060642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140049619) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4759 + ... + 17399.

It is an arithmetic number, because the mean of its divisors is an integer number (16872856).

Almost surely, 2^140049639 is an apocalyptic number.

140049639 is a deficient number, since it is larger than the sum of its proper divisors (62424633).

140049639 is a wasteful number, since it uses less digits than its factorization.

140049639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13878 (or 13875 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 140049639 is about 11834.2570108985. The cubic root of 140049639 is about 519.3107720322.

The spelling of 140049639 in words is "one hundred forty million, forty-nine thousand, six hundred thirty-nine".