1034400385 has 4 divisors (see below), whose sum is σ = 1241280468. Its totient is φ = 827520304.

The previous prime is 1034400373. The next prime is 1034400443. The reversal of 1034400385 is 5830044301.

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 626400784 + 407999601 = 25028^2 + 20199^2 .

It is a cyclic number.

It is not a de Polignac number, because 1034400385 - 2¹⁵ = 1034367617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103440034 + ... + 103440043.

It is an arithmetic number, because the mean of its divisors is an integer number (310320117).

Almost surely, 2^1034400385 is an apocalyptic number.

It is an amenable number.

1034400385 is a deficient number, since it is larger than the sum of its proper divisors (206880083).

1034400385 is an equidigital number, since it uses as much as digits as its factorization.

1034400385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206880082.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1034400385 is about 32162.0954696674. The cubic root of 1034400385 is about 1011.3377642968.

Adding to 1034400385 its reverse (5830044301), we get a palindrome (6864444686).

The spelling of 1034400385 in words is "one billion, thirty-four million, four hundred thousand, three hundred eighty-five".