140000004 has 18 divisors (see below), whose sum is σ = 353888990. Its totient is φ = 46666656.

The previous prime is 139999991. The next prime is 140000041. The reversal of 140000004 is 400000041.

It can be written as a sum of positive squares in only one way, i.e., 82846404 + 57153600 = 9102^2 + 7560^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×140000004² = 39200002240000032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1944409 + ... + 1944480.

Almost surely, 2^140000004 is an apocalyptic number.

It is an amenable number.

140000004 is an abundant number, since it is smaller than the sum of its proper divisors (213888986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140000004 is a wasteful number, since it uses less digits than its factorization.

140000004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3888899 (or 3888894 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 140000004 is about 11832.1597352301. The cubic root of 140000004 is about 519.2494151303.

Adding to 140000004 its reverse (400000041), we get a palindrome (540000045).

The spelling of 140000004 in words is "one hundred forty million, four", and thus it is an aban number.