743400990 has 80 divisors (see below), whose sum is σ = 2116545552. Its totient is φ = 186575616.

The previous prime is 743400989. The next prime is 743400991. The reversal of 743400990 is 99004347.

It is an interprime number because it is at equal distance from previous prime (743400989) and next prime (743400991).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (743400991) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 13224 + ... + 40763.

Almost surely, 2^743400990 is an apocalyptic number.

743400990 is an abundant number, since it is smaller than the sum of its proper divisors (1373144562).

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

743400990 is a wasteful number, since it uses less digits than its factorization.

743400990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54023 (or 54014 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 743400990 is about 27265.3807969007. The cubic root of 743400990 is about 905.8877322403.

The spelling of 743400990 in words is "seven hundred forty-three million, four hundred thousand, nine hundred ninety".