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80409037 is a prime number
BaseRepresentation
bin1001100101011…
…11000111001101
312121022012110111
410302233013031
5131041042122
611551240021
71664315452
oct462570715
9177265414
1080409037
1141430555
1222b19011
1313874617
14a971829
1570d4d77
hex4caf1cd

80409037 has 2 divisors, whose sum is σ = 80409038. Its totient is φ = 80409036.

The previous prime is 80409013. The next prime is 80409053. The reversal of 80409037 is 73090408.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80389156 + 19881 = 8966^2 + 141^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-80409037 is a prime.

It is a super-2 number, since 2×804090372 = 12931226462534738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80409437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40204518 + 40204519.

It is an arithmetic number, because the mean of its divisors is an integer number (40204519).

Almost surely, 280409037 is an apocalyptic number.

It is an amenable number.

80409037 is a deficient number, since it is larger than the sum of its proper divisors (1).

80409037 is an equidigital number, since it uses as much as digits as its factorization.

80409037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 80409037 is about 8967.1086198395. The cubic root of 80409037 is about 431.6200595334.

The spelling of 80409037 in words is "eighty million, four hundred nine thousand, thirty-seven".