1400087057 has 4 divisors (see below), whose sum is σ = 1404241956. Its totient is φ = 1395932160.

The previous prime is 1400087011. The next prime is 1400087081. The reversal of 1400087057 is 7507800041.

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

It can be written as a sum of positive squares in 2 ways, for example, as 338891281 + 1061195776 = 18409^2 + 32576^2 .

It is a cyclic number.

It is not a de Polignac number, because 1400087057 - 2¹⁰ = 1400086033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1400017057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2076944 + ... + 2077617.

It is an arithmetic number, because the mean of its divisors is an integer number (351060489).

Almost surely, 2^1400087057 is an apocalyptic number.

It is an amenable number.

1400087057 is a deficient number, since it is larger than the sum of its proper divisors (4154899).

1400087057 is an equidigital number, since it uses as much as digits as its factorization.

1400087057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4154898.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 1400087057 is about 37417.7371977515. The cubic root of 1400087057 is about 1118.7121296254.

Adding to 1400087057 its reverse (7507800041), we get a palindrome (8907887098).

The spelling of 1400087057 in words is "one billion, four hundred million, eighty-seven thousand, fifty-seven".