900743493 has 8 divisors (see below), whose sum is σ = 1293375328. Its totient is φ = 554303664.

The previous prime is 900743479. The next prime is 900743497. The reversal of 900743493 is 394347009.

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

It is not a de Polignac number, because 900743493 - 2⁴ = 900743477 is a prime.

It is a super-2 number, since 2×900743493² = 1622677680363682098, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 23095987 = 900743493 / (9 + 0 + 0 + 7 + 4 + 3 + 4 + 9 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900743497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11547955 + ... + 11548032.

It is an arithmetic number, because the mean of its divisors is an integer number (161671916).

Almost surely, 2^900743493 is an apocalyptic number.

It is an amenable number.

900743493 is a deficient number, since it is larger than the sum of its proper divisors (392631835).

900743493 is a wasteful number, since it uses less digits than its factorization.

900743493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23096003.

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 900743493 is about 30012.3889918813. The cubic root of 900743493 is about 965.7551760950.

The spelling of 900743493 in words is "nine hundred million, seven hundred forty-three thousand, four hundred ninety-three".