1354140409 has 2 divisors, whose sum is σ = 1354140410. Its totient is φ = 1354140408.

The previous prime is 1354140383. The next prime is 1354140443. The reversal of 1354140409 is 9040414531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 749226384 + 604914025 = 27372^2 + 24595^2 .

It is a cyclic number.

It is not a de Polignac number, because 1354140409 - 2¹³ = 1354132217 is a prime.

It is not a weakly prime, because it can be changed into another prime (1354144409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677070204 + 677070205.

It is an arithmetic number, because the mean of its divisors is an integer number (677070205).

Almost surely, 2^1354140409 is an apocalyptic number.

It is an amenable number.

1354140409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1354140409 is an equidigital number, since it uses as much as digits as its factorization.

1354140409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1354140409 is about 36798.6468365346. The cubic root of 1354140409 is about 1106.3381777245.

The spelling of 1354140409 in words is "one billion, three hundred fifty-four million, one hundred forty thousand, four hundred nine".