248399407 has 6 divisors (see below), whose sum is σ = 262161528. Its totient is φ = 235325412.

The previous prime is 248399399. The next prime is 248399419. The reversal of 248399407 is 704993842.

It is a happy number.

It is not a de Polignac number, because 248399407 - 2³ = 248399399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248399507) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 343683 + ... + 344404.

It is an arithmetic number, because the mean of its divisors is an integer number (43693588).

Almost surely, 2^248399407 is an apocalyptic number.

248399407 is a deficient number, since it is larger than the sum of its proper divisors (13762121).

248399407 is an equidigital number, since it uses as much as digits as its factorization.

248399407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688125 (or 688106 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 248399407 is about 15760.6918312617. The cubic root of 248399407 is about 628.6132316772.

The spelling of 248399407 in words is "two hundred forty-eight million, three hundred ninety-nine thousand, four hundred seven".