1400064040 has 32 divisors (see below), whose sum is σ = 3162424680. Its totient is φ = 557842432.

The previous prime is 1400063999. The next prime is 1400064049. The reversal of 1400064040 is 404600041.

It can be written as a sum of positive squares in 4 ways, for example, as 1166768964 + 233295076 = 34158^2 + 15274^2 .

It is a super-2 number, since 2×1400064040² = 3920358632202243200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1400063999 and 1400064017.

It is not an unprimeable number, because it can be changed into a prime (1400064049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57817 + ... + 78376.

Almost surely, 2^1400064040 is an apocalyptic number.

1400064040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1400064040 is an abundant number, since it is smaller than the sum of its proper divisors (1762360640).

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

1400064040 is a wasteful number, since it uses less digits than its factorization.

1400064040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136461 (or 136457 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1400064040 is about 37417.4296284499. The cubic root of 1400064040 is about 1118.7059991641.

Adding to 1400064040 its reverse (404600041), we get a palindrome (1804664081).

The spelling of 1400064040 in words is "one billion, four hundred million, sixty-four thousand, forty".