747305990 has 8 divisors (see below), whose sum is σ = 1345150800. Its totient is φ = 298922392.

The previous prime is 747305981. The next prime is 747306011. The reversal of 747305990 is 99503747.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×747305990³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37365290 + ... + 37365309.

It is an arithmetic number, because the mean of its divisors is an integer number (168143850).

Almost surely, 2^747305990 is an apocalyptic number.

747305990 is a deficient number, since it is larger than the sum of its proper divisors (597844810).

747305990 is a wasteful number, since it uses less digits than its factorization.

747305990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74730606.

The product of its (nonzero) digits is 238140, while the sum is 44.

The square root of 747305990 is about 27336.8979586200. The cubic root of 747305990 is about 907.4711377161.

The spelling of 747305990 in words is "seven hundred forty-seven million, three hundred five thousand, nine hundred ninety".