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1404121891 is a prime number
BaseRepresentation
bin101001110110001…
…0011001100100011
310121212002210010111
41103230103030203
510333423400031
6351155112151
746536560554
oct12354231443
93555083114
101404121891
11660654617
123322a2657
13194b92973
14d46a632b
158340b1b1
hex53b13323

1404121891 has 2 divisors, whose sum is σ = 1404121892. Its totient is φ = 1404121890.

The previous prime is 1404121883. The next prime is 1404121903. The reversal of 1404121891 is 1981214041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1404121891 - 23 = 1404121883 is a prime.

It is not a weakly prime, because it can be changed into another prime (1404121811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702060945 + 702060946.

It is an arithmetic number, because the mean of its divisors is an integer number (702060946).

Almost surely, 21404121891 is an apocalyptic number.

1404121891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1404121891 is an equidigital number, since it uses as much as digits as its factorization.

1404121891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 1404121891 is about 37471.6144701559. The cubic root of 1404121891 is about 1119.7857506315.

The spelling of 1404121891 in words is "one billion, four hundred four million, one hundred twenty-one thousand, eight hundred ninety-one".