1400011111 has 2 divisors, whose sum is σ = 1400011112. Its totient is φ = 1400011110.

The previous prime is 1400011099. The next prime is 1400011121. The reversal of 1400011111 is 1111100041.

It is an a-pointer prime, because the next prime (1400011121) can be obtained adding 1400011111 to its sum of digits (10).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1400011111 - 2⁵ = 1400011079 is a prime.

It is a super-2 number, since 2×1400011111² = 3920062221846908642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1400011121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700005555 + 700005556.

It is an arithmetic number, because the mean of its divisors is an integer number (700005556).

Almost surely, 2^1400011111 is an apocalyptic number.

1400011111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400011111 is an equidigital number, since it uses as much as digits as its factorization.

1400011111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 1400011111 is about 37416.7223444278. The cubic root of 1400011111 is about 1118.6919015385.

Adding to 1400011111 its reverse (1111100041), we get a palindrome (2511111152).

The spelling of 1400011111 in words is "one billion, four hundred million, eleven thousand, one hundred eleven".