74401387 has 2 divisors, whose sum is σ = 74401388. Its totient is φ = 74401386.

The previous prime is 74401363. The next prime is 74401391. The reversal of 74401387 is 78310447.

It is a strong prime.

It is an emirp because it is prime and its reverse (78310447) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74401387 - 2⁷ = 74401259 is a prime.

It is not a weakly prime, because it can be changed into another prime (74401337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37200693 + 37200694.

It is an arithmetic number, because the mean of its divisors is an integer number (37200694).

Almost surely, 2^74401387 is an apocalyptic number.

74401387 is a deficient number, since it is larger than the sum of its proper divisors (1).

74401387 is an equidigital number, since it uses as much as digits as its factorization.

74401387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 74401387 is about 8625.6238614955. The cubic root of 74401387 is about 420.5913570808.

The spelling of 74401387 in words is "seventy-four million, four hundred one thousand, three hundred eighty-seven".