1400009918 has 8 divisors (see below), whose sum is σ = 2100174912. Its totient is φ = 699951616.

The previous prime is 1400009917. The next prime is 1400009921. The reversal of 1400009918 is 8199000041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×1400009918⁴ (a number of 38 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400009917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31571 + ... + 61617.

It is an arithmetic number, because the mean of its divisors is an integer number (262521864).

Almost surely, 2^1400009918 is an apocalyptic number.

1400009918 is a deficient number, since it is larger than the sum of its proper divisors (700164994).

1400009918 is a wasteful number, since it uses less digits than its factorization.

1400009918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53346.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 1400009918 is about 37416.7064023546. The cubic root of 1400009918 is about 1118.6915837792.

Adding to 1400009918 its reverse (8199000041), we get a palindrome (9599009959).

The spelling of 1400009918 in words is "one billion, four hundred million, nine thousand, nine hundred eighteen".