400614749 has 6 divisors (see below), whose sum is σ = 401818590. Its totient is φ = 399414456.

The previous prime is 400614743. The next prime is 400614761. The reversal of 400614749 is 947416004.

It can be written as a sum of positive squares in only one way, i.e., 359102500 + 41512249 = 18950^2 + 6443^2 .

It is not a de Polignac number, because 400614749 - 2⁴ = 400614733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400614743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 142247 + ... + 145035.

It is an arithmetic number, because the mean of its divisors is an integer number (66969765).

Almost surely, 2^400614749 is an apocalyptic number.

It is an amenable number.

400614749 is a deficient number, since it is larger than the sum of its proper divisors (1203841).

400614749 is an frugal number, since it uses more digits than its factorization.

400614749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3547 (or 3168 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 400614749 is about 20015.3628245905. The cubic root of 400614749 is about 737.1835656375.

The spelling of 400614749 in words is "four hundred million, six hundred fourteen thousand, seven hundred forty-nine".