1400213451 has 16 divisors (see below), whose sum is σ = 2297786624. Its totient is φ = 738573984.

The previous prime is 1400213393. The next prime is 1400213453. The reversal of 1400213451 is 1543120041.

It is not a de Polignac number, because 1400213451 - 2⁷ = 1400213323 is a prime.

It is a super-2 number, since 2×1400213451² = 3921195416722658802, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (1400213453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2564221 + ... + 2564766.

It is an arithmetic number, because the mean of its divisors is an integer number (143611664).

Almost surely, 2^1400213451 is an apocalyptic number.

1400213451 is a deficient number, since it is larger than the sum of its proper divisors (897573173).

1400213451 is a wasteful number, since it uses less digits than its factorization.

1400213451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5129010.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1400213451 is about 37419.4261179938. The cubic root of 1400213451 is about 1118.7457928288.

Adding to 1400213451 its reverse (1543120041), we get a palindrome (2943333492).

The spelling of 1400213451 in words is "one billion, four hundred million, two hundred thirteen thousand, four hundred fifty-one".