1400026451 has 4 divisors (see below), whose sum is σ = 1403145000. Its totient is φ = 1396907904.

The previous prime is 1400026447. The next prime is 1400026471. The reversal of 1400026451 is 1546200041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1400026451 - 2² = 1400026447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1400026471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1558601 + ... + 1559498.

It is an arithmetic number, because the mean of its divisors is an integer number (350786250).

Almost surely, 2^1400026451 is an apocalyptic number.

1400026451 is a deficient number, since it is larger than the sum of its proper divisors (3118549).

1400026451 is an equidigital number, since it uses as much as digits as its factorization.

1400026451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3118548.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1400026451 is about 37416.9273324254. The cubic root of 1400026451 is about 1118.6959873802.

Adding to 1400026451 its reverse (1546200041), we get a palindrome (2946226492).

The spelling of 1400026451 in words is "one billion, four hundred million, twenty-six thousand, four hundred fifty-one".