400340337 has 4 divisors (see below), whose sum is σ = 533787120. Its totient is φ = 266893556.

The previous prime is 400340329. The next prime is 400340341. The reversal of 400340337 is 733043004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 400340337 - 2³ = 400340329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400340357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66723387 + ... + 66723392.

It is an arithmetic number, because the mean of its divisors is an integer number (133446780).

Almost surely, 2^400340337 is an apocalyptic number.

It is an amenable number.

400340337 is a deficient number, since it is larger than the sum of its proper divisors (133446783).

400340337 is a wasteful number, since it uses less digits than its factorization.

400340337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133446782.

The product of its (nonzero) digits is 3024, while the sum is 24.

The square root of 400340337 is about 20008.5066159371. The cubic root of 400340337 is about 737.0152091943.

The spelling of 400340337 in words is "four hundred million, three hundred forty thousand, three hundred thirty-seven".