299664440 has 32 divisors (see below), whose sum is σ = 713908080. Its totient is φ = 112814592.

The previous prime is 299664439. The next prime is 299664451. The reversal of 299664440 is 44466992.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 299664391 and 299664400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219662 + ... + 221021.

Almost surely, 2^299664440 is an apocalyptic number.

299664440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

299664440 is an abundant number, since it is smaller than the sum of its proper divisors (414243640).

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

299664440 is a wasteful number, since it uses less digits than its factorization.

299664440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440711 (or 440707 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 44.

The square root of 299664440 is about 17310.8185826090. The cubic root of 299664440 is about 669.1832626081.

The spelling of 299664440 in words is "two hundred ninety-nine million, six hundred sixty-four thousand, four hundred forty".