249460796421 has 12 divisors (see below), whose sum is σ = 360403300972. Its totient is φ = 166274410176.

The previous prime is 249460796411. The next prime is 249460796437. The reversal of 249460796421 is 124697064942.

249460796421 is a `hidden beast` number, since 2 + 4 + 9 + 4 + 607 + 9 + 6 + 4 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 246661222500 + 2799573921 = 496650^2 + 52911^2 .

It is not a de Polignac number, because 249460796421 - 2⁷ = 249460796293 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249460796411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2684056 + ... + 2775441.

Almost surely, 2^249460796421 is an apocalyptic number.

It is an amenable number.

249460796421 is a deficient number, since it is larger than the sum of its proper divisors (110942504551).

249460796421 is a wasteful number, since it uses less digits than its factorization.

249460796421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5464580 (or 5464577 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The spelling of 249460796421 in words is "two hundred forty-nine billion, four hundred sixty million, seven hundred ninety-six thousand, four hundred twenty-one".