407199649 has 2 divisors, whose sum is σ = 407199650. Its totient is φ = 407199648.

The previous prime is 407199647. The next prime is 407199671. The reversal of 407199649 is 946991704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 405619600 + 1580049 = 20140^2 + 1257^2 .

It is a cyclic number.

It is not a de Polignac number, because 407199649 - 2¹ = 407199647 is a prime.

Together with 407199647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (407199641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203599824 + 203599825.

It is an arithmetic number, because the mean of its divisors is an integer number (203599825).

Almost surely, 2^407199649 is an apocalyptic number.

It is an amenable number.

407199649 is a deficient number, since it is larger than the sum of its proper divisors (1).

407199649 is an equidigital number, since it uses as much as digits as its factorization.

407199649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 407199649 is about 20179.1885119298. The cubic root of 407199649 is about 741.2006616405.

The spelling of 407199649 in words is "four hundred seven million, one hundred ninety-nine thousand, six hundred forty-nine".