1400530457 has 2 divisors, whose sum is σ = 1400530458. Its totient is φ = 1400530456.

The previous prime is 1400530429. The next prime is 1400530519. The reversal of 1400530457 is 7540350041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 959698441 + 440832016 = 30979^2 + 20996^2 .

It is a cyclic number.

It is not a de Polignac number, because 1400530457 - 2²² = 1396336153 is a prime.

It is a super-2 number, since 2×1400530457² = 3922971121969257698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1400530657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700265228 + 700265229.

It is an arithmetic number, because the mean of its divisors is an integer number (700265229).

Almost surely, 2^1400530457 is an apocalyptic number.

It is an amenable number.

1400530457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400530457 is an equidigital number, since it uses as much as digits as its factorization.

1400530457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 1400530457 is about 37423.6617262395. The cubic root of 1400530457 is about 1118.8302138547.

Adding to 1400530457 its reverse (7540350041), we get a palindrome (8940880498).

The spelling of 1400530457 in words is "one billion, four hundred million, five hundred thirty thousand, four hundred fifty-seven".