1400359549 has 2 divisors, whose sum is σ = 1400359550. Its totient is φ = 1400359548.

The previous prime is 1400359529. The next prime is 1400359573. The reversal of 1400359549 is 9459530041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1302488100 + 97871449 = 36090^2 + 9893^2 .

It is a cyclic number.

It is not a de Polignac number, because 1400359549 - 2⁷ = 1400359421 is a prime.

It is a super-2 number, since 2×1400359549² = 3922013732950966802, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1400359529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700179774 + 700179775.

It is an arithmetic number, because the mean of its divisors is an integer number (700179775).

Almost surely, 2^1400359549 is an apocalyptic number.

It is an amenable number.

1400359549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400359549 is an equidigital number, since it uses as much as digits as its factorization.

1400359549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 1400359549 is about 37421.3782349074. The cubic root of 1400359549 is about 1118.7847013819.

The spelling of 1400359549 in words is "one billion, four hundred million, three hundred fifty-nine thousand, five hundred forty-nine".