740490989490 has 144 divisors (see below), whose sum is σ = 2240067749400. Its totient is φ = 169220298240.

The previous prime is 740490989467. The next prime is 740490989509. The reversal of 740490989490 is 94989094047.

It can be written as a sum of positive squares in 4 ways, for example, as 564919095321 + 175571894169 = 751611^2 + 419013^2 .

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 25832686 + ... + 25861334.

Almost surely, 2^740490989490 is an apocalyptic number.

740490989490 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 740490989490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1120033874700).

740490989490 is an abundant number, since it is smaller than the sum of its proper divisors (1499576759910).

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

740490989490 is a wasteful number, since it uses less digits than its factorization.

740490989490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34537 (or 34527 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 63.

The spelling of 740490989490 in words is "seven hundred forty billion, four hundred ninety million, nine hundred eighty-nine thousand, four hundred ninety".