1249399417 has 16 divisors (see below), whose sum is σ = 1477460992. Its totient is φ = 1033896960.

The previous prime is 1249399351. The next prime is 1249399423. The reversal of 1249399417 is 7149939421.

It is a cyclic number.

It is not a de Polignac number, because 1249399417 - 2¹⁵ = 1249366649 is a prime.

It is a super-3 number, since 3×1249399417³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1249399427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87313 + ... + 100609.

It is an arithmetic number, because the mean of its divisors is an integer number (92341312).

Almost surely, 2^1249399417 is an apocalyptic number.

It is an amenable number.

1249399417 is a deficient number, since it is larger than the sum of its proper divisors (228061575).

1249399417 is a wasteful number, since it uses less digits than its factorization.

1249399417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13768.

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

The square root of 1249399417 is about 35346.8445126294. The cubic root of 1249399417 is about 1077.0447951316.

The spelling of 1249399417 in words is "one billion, two hundred forty-nine million, three hundred ninety-nine thousand, four hundred seventeen".