1249494906 has 32 divisors (see below), whose sum is σ = 2784181248. Its totient is φ = 370577840.

The previous prime is 1249494871. The next prime is 1249494907. The reversal of 1249494906 is 6094949421.

It is a super-2 number, since 2×1249494906² = 3122475040239897672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1249494907) 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, 198300 + ... + 204503.

It is an arithmetic number, because the mean of its divisors is an integer number (87005664).

Almost surely, 2^1249494906 is an apocalyptic number.

1249494906 is an abundant number, since it is smaller than the sum of its proper divisors (1534686342).

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

1249494906 is a wasteful number, since it uses less digits than its factorization.

1249494906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402866.

The product of its (nonzero) digits is 559872, while the sum is 48.

The square root of 1249494906 is about 35348.1952297426. The cubic root of 1249494906 is about 1077.0722331974.

The spelling of 1249494906 in words is "one billion, two hundred forty-nine million, four hundred ninety-four thousand, nine hundred six".