80409437 has 2 divisors, whose sum is σ = 80409438. Its totient is φ = 80409436.

The previous prime is 80409421. The next prime is 80409491. The reversal of 80409437 is 73490408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79049881 + 1359556 = 8891^2 + 1166^2 .

It is a cyclic number.

It is not a de Polignac number, because 80409437 - 2⁴ = 80409421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80409397 and 80409406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80409037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40204718 + 40204719.

It is an arithmetic number, because the mean of its divisors is an integer number (40204719).

Almost surely, 2^80409437 is an apocalyptic number.

It is an amenable number.

80409437 is a deficient number, since it is larger than the sum of its proper divisors (1).

80409437 is an equidigital number, since it uses as much as digits as its factorization.

80409437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 80409437 is about 8967.1309235452. The cubic root of 80409437 is about 431.6207752396.

The spelling of 80409437 in words is "eighty million, four hundred nine thousand, four hundred thirty-seven".