40369402 has 4 divisors (see below), whose sum is σ = 60554106. Its totient is φ = 20184700.

The previous prime is 40369367. The next prime is 40369423. The reversal of 40369402 is 20496304.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 33074001 + 7295401 = 5751^2 + 2701^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10092349 + ... + 10092352.

Almost surely, 2^40369402 is an apocalyptic number.

40369402 is a deficient number, since it is larger than the sum of its proper divisors (20184704).

40369402 is a wasteful number, since it uses less digits than its factorization.

40369402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20184703.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 40369402 is about 6353.6919975712. The cubic root of 40369402 is about 343.0447459240.

The spelling of 40369402 in words is "forty million, three hundred sixty-nine thousand, four hundred two".