1400443023 has 32 divisors (see below), whose sum is σ = 2171607552. Its totient is φ = 786240000.

The previous prime is 1400443019. The next prime is 1400443111. The reversal of 1400443023 is 3203440041.

It is not a de Polignac number, because 1400443023 - 2² = 1400443019 is a prime.

It is a super-2 number, since 2×1400443023² = 3922481321338757058, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400443523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 429148 + ... + 432398.

It is an arithmetic number, because the mean of its divisors is an integer number (67862736).

Almost surely, 2^1400443023 is an apocalyptic number.

1400443023 is a deficient number, since it is larger than the sum of its proper divisors (771164529).

1400443023 is a wasteful number, since it uses less digits than its factorization.

1400443023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3615.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 1400443023 is about 37422.4935433223. The cubic root of 1400443023 is about 1118.8069308107.

Adding to 1400443023 its reverse (3203440041), we get a palindrome (4603883064).

The spelling of 1400443023 in words is "one billion, four hundred million, four hundred forty-three thousand, twenty-three".