1084402391 has 2 divisors, whose sum is σ = 1084402392. Its totient is φ = 1084402390.

The previous prime is 1084402373. The next prime is 1084402421. The reversal of 1084402391 is 1932044801.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1084402391 - 2³⁰ = 10660567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1084402301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542201195 + 542201196.

It is an arithmetic number, because the mean of its divisors is an integer number (542201196).

Almost surely, 2^1084402391 is an apocalyptic number.

1084402391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1084402391 is an equidigital number, since it uses as much as digits as its factorization.

1084402391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1084402391 is about 32930.2655774289. The cubic root of 1084402391 is about 1027.3777489463.

The spelling of 1084402391 in words is "one billion, eighty-four million, four hundred two thousand, three hundred ninety-one".