40401694 has 4 divisors (see below), whose sum is σ = 60602544. Its totient is φ = 20200846.

The previous prime is 40401689. The next prime is 40401701. The reversal of 40401694 is 49610404.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100422 + ... + 10100425.

It is an arithmetic number, because the mean of its divisors is an integer number (15150636).

Almost surely, 2^40401694 is an apocalyptic number.

40401694 is a deficient number, since it is larger than the sum of its proper divisors (20200850).

40401694 is a wasteful number, since it uses less digits than its factorization.

40401694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20200849.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 40401694 is about 6356.2326892586. The cubic root of 40401694 is about 343.1361901697.

The spelling of 40401694 in words is "forty million, four hundred one thousand, six hundred ninety-four".