740804397 has 8 divisors (see below), whose sum is σ = 997519200. Its totient is φ = 488979600.

The previous prime is 740804371. The next prime is 740804399. The reversal of 740804397 is 793408047.

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

It is a de Polignac number, because none of the positive numbers 2^k-740804397 is a prime.

It is a super-2 number, since 2×740804397² = 1097582309229067218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (740804399) 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, 1222147 + ... + 1222752.

It is an arithmetic number, because the mean of its divisors is an integer number (124689900).

Almost surely, 2^740804397 is an apocalyptic number.

It is an amenable number.

740804397 is a deficient number, since it is larger than the sum of its proper divisors (256714803).

740804397 is a wasteful number, since it uses less digits than its factorization.

740804397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2445003.

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 740804397 is about 27217.7221126236. The cubic root of 740804397 is about 904.8317899066.

The spelling of 740804397 in words is "seven hundred forty million, eight hundred four thousand, three hundred ninety-seven".