73902401 has 2 divisors, whose sum is σ = 73902402. Its totient is φ = 73902400.

The previous prime is 73902373. The next prime is 73902421. The reversal of 73902401 is 10420937.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68046001 + 5856400 = 8249^2 + 2420^2 .

It is an emirp because it is prime and its reverse (10420937) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73902401 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (73902421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36951200 + 36951201.

It is an arithmetic number, because the mean of its divisors is an integer number (36951201).

Almost surely, 2^73902401 is an apocalyptic number.

It is an amenable number.

73902401 is a deficient number, since it is larger than the sum of its proper divisors (1).

73902401 is an equidigital number, since it uses as much as digits as its factorization.

73902401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 73902401 is about 8596.6505686808. The cubic root of 73902401 is about 419.6489905549.

The spelling of 73902401 in words is "seventy-three million, nine hundred two thousand, four hundred one".