1400440013421 has 8 divisors (see below), whose sum is σ = 1867268715840. Its totient is φ = 933618993312.

The previous prime is 1400440013417. The next prime is 1400440013437. The reversal of 1400440013421 is 1243100440041.

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

It is not a de Polignac number, because 1400440013421 - 2² = 1400440013417 is a prime.

It is a super-2 number, since 2×1400440013421² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1400440013391 and 1400440013400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400440012421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1480840 + ... + 2234673.

It is an arithmetic number, because the mean of its divisors is an integer number (233408589480).

Almost surely, 2^{1400440013421} is an apocalyptic number.

It is an amenable number.

1400440013421 is a deficient number, since it is larger than the sum of its proper divisors (466828702419).

1400440013421 is a wasteful number, since it uses less digits than its factorization.

1400440013421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3841155.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 1400440013421 its reverse (1243100440041), we get a palindrome (2643540453462).

The spelling of 1400440013421 in words is "one trillion, four hundred billion, four hundred forty million, thirteen thousand, four hundred twenty-one".