1400014557 has 16 divisors (see below), whose sum is σ = 2113231680. Its totient is φ = 915731856.

The previous prime is 1400014541. The next prime is 1400014559. The reversal of 1400014557 is 7554100041.

It is a happy number.

It is not a de Polignac number, because 1400014557 - 2⁴ = 1400014541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1400014557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400014559) 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 15 ways as a sum of consecutive naturals, for example, 487743 + ... + 490604.

It is an arithmetic number, because the mean of its divisors is an integer number (132076980).

Almost surely, 2^1400014557 is an apocalyptic number.

It is an amenable number.

1400014557 is a deficient number, since it is larger than the sum of its proper divisors (713217123).

1400014557 is an equidigital number, since it uses as much as digits as its factorization.

1400014557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978409 (or 978403 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 1400014557 is about 37416.7683933287. The cubic root of 1400014557 is about 1118.6928193906.

Adding to 1400014557 its reverse (7554100041), we get a palindrome (8954114598).

The spelling of 1400014557 in words is "one billion, four hundred million, fourteen thousand, five hundred fifty-seven".