1249900470 has 320 divisors, whose sum is σ = 4277661696. Its totient is φ = 254741760.

The previous prime is 1249900453. The next prime is 1249900517. The reversal of 1249900470 is 740099421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 2284737 + ... + 2285283.

Almost surely, 2^1249900470 is an apocalyptic number.

1249900470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1249900470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2138830848).

1249900470 is an abundant number, since it is smaller than the sum of its proper divisors (3027761226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1249900470 is a wasteful number, since it uses less digits than its factorization.

1249900470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617 (or 608 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 1249900470 is about 35353.9314645486. The cubic root of 1249900470 is about 1077.1887534724.

Adding to 1249900470 its reverse (740099421), we get a palindrome (1989999891).

The spelling of 1249900470 in words is "one billion, two hundred forty-nine million, nine hundred thousand, four hundred seventy".